roof that it sounded like a continuous roll of thunder above their heads. The Professor and the children every so often looked up with alarm and then involuntarily tried to bury their heads in their shoulders. Suddenly Karik shouted: "There's another one! Ooch, what a big one! Look then! It is coming down on us." Above them along the fleshy underside of the mushroom hat there crawled lazily some sort of naked, fat animal. It was like a tightly stuffed, dirty-looking mattress. The back of this monster was glossy as if it had been smeared with grease. "What's that?" demanded Valya who, taking no chances, was hiding behind the Professor's back. "A slug!" replied the Professor very calmly. "A very ordinary snail without a shell." "Will it also fall on us?" "Oh, no!" The Professor started to laugh. "That one won't fall! Don't worry! He's stuck on tight." "Is he another wrecker?" "What, a slug? Shame on you! The slug is the mushroom's best friend. He certainly destroys the mushrooms, but by that means he gives them a new life." "How is it possible to be destructive and useful at the same time?" The Professor stroked his beard and replied in a leisurely way: "The slug swallows pieces of mushroom in which there are spores - mushroom seeds. These spores pass through the stomach of the slug and fall finally on the soil where they take root. You would not have many mushrooms but for the slugs." "There you are, Valya," grinned Karik, "we called our shelter 'Valya's Wonder Tent': we must call the mushroom roof 'The Slug's Hat.' " Valya was about to say something witty when the Professor raised his finger in warning and listening to something said with some agitation: "What's that? Do you hear?" The travellers got up. Through the noise and rumble of the gale they could hear a dull roar - somewhere quite close it seemed, as if the sea was breaking against cliffs. The noise as if of breakers became closer every minute and grew louder and louder. "Can it be thunder?" whispered Valya, listening. Suddenly there was a roar and whistle. From somewhere unknown there swept a torrent of water and from all directions foaming streams broke in from this muddy sea. The Professor and the children stood upon a small island pressed closely to the stem of the mushroom. The water dashed past them sweeping everything out of its way, breaking the grassy trees or bending them to the very ground. The mushroom stood like a tower on the island, but the water rose and rose, threatening to submerge not only the island but the towers-It was already splashing their feet. "Somewhere near here there must be a river flowing," said the Professor, "and in all probability it has flooded over its banks and here you are. . . ." He waved his hand helplessly. "Will the water wash us away?" asked Valya uneasily. The Professor didn't answer. Knitting his brow he silently looked down at his feet and worked his blue, frozen fingers. The water continued to rise - like dough. It threatened clearly to sweep the travellers away off the island and to carry them into the jungle, and there to drown them in some deep ravine. Having looked at the Professor it dawned on Karik that their guide could see no way of saving them. "Listen," said Karik with decision, touching the cold hand of the Professor. "I don't think our position is so terrible." "What do you suggest?" "We must climb up the mushroom!" answered Karik. "Yes, yes," gruff-gruffed the Professor absent-mindedly. "Let's try and climb up." But having examined the round thick stem of the mushroom which rose vertically into the air he sighed and shook his head: it wasn't possible to climb up the mushroom. "No, it won't work, my dears," he said, rapidly winking his eyes. "We cannot climb that." "What about the roof of this wonder tent?" asked Valya, looking at the hanging strip of mushroom skin. "Would it hold us?" The Professor looked upwards. "Marvellous!" he rejoiced. "My goodness, that's a wonderful idea. Quickly, my dears! It's simply grand!" He helped the children get up on his shoulders. From his shoulders they were able to scramble on to the roof of the wonder-tent - first Valya, then Karik. Valya got down on her knees, hung her head over the edge of the canopy and stretched out her hand to the Professor. "Give us your hand !" The Professor just blinked his eyes good-humouredly. "Well, what are you up to?" shouted Valya. "Nothing, nothing! I'll stay here," said their guide. He knew that the children had not the strength to pull him up, and in any case the roof would probably not stand the extra weight. The water, however, still continued to rise. It had already flooded the island on which the mushroom stood and was lapping over his feet. The wind was blowing cold. Grey-leaden waves were rising in the water. These waves, started to break against the stem of the mushroom spraying the Professor, already shaking with cold, from head to foot. What could he do? Swim? But where to? Would he ever reach dry land when he was already numbed and frozen. Yes, and how could he leave the children alone? He stood, with his teeth chattering, gazing at the stormy lake surrounding him, in deep depression. The water was up to his knees by now. The strong current was already clutching at his legs, but he pressed his back against the cold slippery, mushroom stem. Logs came floating towards him. They jostled him and painfully hurt his knees. His legs were soon covered with deep scratches. The water now reached to his waist. He stood, with his lips, frozen with cold, tightly clenched, trying just to think of nothing. The water rose higher and higher. "The children will have to find their own way home alone," drummed in the Professor's mind. CHAPTER X After the flood - In search of a night's lodging - Valya finds the forest hotel - The Professor attacks the landlord - The first night in the new world "CLIMB UP HERE!" SHOUTED the children, anxiously looking down at their guide from above. "Don't worry! Don't worry!" replied the Professor, who was now quite blue with the cold. With her neck craning forward and her mouth open, Valya on the point of tears gazed at the Professor. Karik, knitting his brows, bit his lip. and turned away. He could not in any way help his guide and could not bear to watch the kind old man perish before his very eyes. "My friends," said the Professor, "if anything happens to me do not forget the landmark. You must hurry to get to it. The only possible way for you to get home again I have already described to you. There is no other way for you." Neither of them answered him but both children started to look wildly from side to side. It looked as if they hadn't even heard him. But their eyes were filled with tears. The Professor prepared to die. And undoubtedly he would have died before nightfall had not the rain suddenly ceased. So suddenly that a great silence descended upon them. Ragged clouds were still sweeping across the heavens but clear sky had started to show. A huge red sun could be seen sinking behind the hills. Odd drops of rain still fell noisily on the roof of the mushroom but a cheerful summer evening warmed by the sinking sun had now set in and a warm mist started to rise from the ground. All around the Professor the waves sparkled. They were red like the disappearing sun and at the same time violet like the evening sky. In the turbid flood logs were floating and turning this way and that way. Grass trees came past torn out by the roots. The Professor stood with his legs wide apart and pushed the wet, slippery logs aside with his numbed hands. They kept on coming at him as if they were alive. The water started to fall. A huge tree floating past the mushroom seemed to shake itself in the waves and slowly came to rest aground. The Professor quickly clambered out of the water and stood with his frozen feet on the wet trunk. "It's all over!" Shouted Karik with joy. "The water is going down. Going down!" Valya was clapping her hands. "Look, there is dry land. Can we get down?" Their guide worked his shoulders in a chilly way and stepping first on one foot then on the other he coughed hoarsely and replied: "Yes, yes, climb down. We must be going." The children nimbly made their way to the ground. "Oy, you're absolutely frozen!" said Valya, turning to the Professor. "Let's run. We shall soon get warm running." "Good idea," he nodded his head. "But let's see first which way we should run. Now then Karik, you, my dear, climb up a tree and have a look for our landmark." "Right you are, Professor !" Karik dashed to a tall trunk covered with short, sharp, pointed branches. Clinging to these giant prickles he rapidly made his way up the tree. The tree rocked. The leaves poured a floor of cold water on him just as if they were gutters. Karik shivered and pressed himself to the trunk, but immediately afterwards shook himself like a dog and went on climbing. At last he made the top of the grass tree. It bent under his weight and he slowly rocked backwards and forwards turning his head now to the right and now to the left. Below him as far as eye could see stretched forest, forest, forest. It was no longer, however, as it had appeared formerly. All the trees were sloping to one side as if they were half cut down. Big leaves could be seen bending under the weight of great globes of water which looked as if they were made of crystal glass. The rays of the setting sun were reflected by them, which gave their surface a purple hue. The whole forest flamed with a thousand such reflections. Shaking with the cold, Karik twisted around the slippery, wet tree top and looked the other way. Far in the west he could see a solitary mast. From its top there hung a limp flag. "There it is!" he shouted, waving his arm towards the forest. "We must go that way. Over that side !" "O.K.! We can see!" Valya yelled from below. Karik rapidly climbed down to the ground. The travellers started off on their journey and were soon deep in the heart of the grass jungle. * * * * * The forest was quiet. Every so often a water globe would fall to the earth with a rumble and slosh, then, once again, there would be complete silence. There was not a single living creature to be seen or heard. A sleep of death seemed to have fallen on everything, just as it did in the story of Sleeping Beauty. "What's happened to them all?" demanded Valya. "Who do you mean?" "Why, all - the wild animals." "The insects? They're somewhere around!" answered the Professor shivering. "They've hidden themselves." "Are they asleep?" "They are drying themselves !" Their guide rubbed his frozen hands vigorously and increased his pace of walking. "All those who fly," he continued as they went along, "and all those who jump are now sitting waiting for the sun to dry them, when they will be able to start running and jumping and flying once again. In this way they wait patiently every morning for the rising sun, sitting in the grass covered with the heavy dew." "That's fine !" grinned Karik. "They can dry themselves out for a whole year and I shouldn't be the least bit sorry." "We certainly seem quite alone in the forest at present," said Valya. "But what does frighten me is that when we lie down to sleep they will attack us in the night. I am not frightened now." * * * * * The children became cheerful. They talked incessantly as they went along and then started to play some sort of game chasing each other through the forest, calling to each other and hiding behind the great trunks of the grass trees. Karik ran on far ahead whilst Valya bravely poked her nose into every crevice and peered into every hole. She wanted to see what the monsters of the grassy forest looked like after the rain. The Professor watched them with growing anxiety and at last said rather crossly: "You mustn't think, my dears, that all the insects will now sit peacefully waiting for sunrise. It has only got to get really dark and all the ruffians of the night world will come creeping out of their holes and crevices. These night ruffians are much more fearsome than the day-time ones. Generally speaking, I don't advise you to poke your nose into every crack." The children looked at each other. "We," hesitated a subdued Valya, "we didn't know about the night ones." They now held hands and followed behind their guide, neither dropping back nor running ahead. The sun sank. In the forest it now became quite dark and in some way particularly silent. The dark trees rose up around the travellers like a wall. Away up above their tops the wind now started to make a mournful sound. At odd intervals heavy drops of rain fell on the ground with the thud of a falling rock. It became difficult to make their way in the dark. The Professor and the children more and more frequently bumped against trees or stumbled and fell. "Wait a minute," said the Professor, stopping. "Here we are wandering about when it is clearly time to look for a lodging place for the night. I think we had better spread out and sweep the wood like a chain, but naturally not losing each other." '"It's so dark," whispered Valya. "We may easily get lost." "We'll call to each other." "What have we got to do?" "Well, we must carefully look for some sort of a comfortable cranny. Whoever finds a suitable place for a night's lodging must shout. Agreed?" "Agreed!" answered Karik and Valya together. The travellers dispersed in different directions. Valya went along a broad stream. Further on her left was Karik, and beyond him the Professor. "Keep a careful look-out!" came the voice of the Professor. "Coo-ee," shouted Valya. "Coo-ee," replied Karik. Suddenly it seemed to Valya that something quite close to her moved. She started running, but at once heard hasty steps behind her. She stopped and hid behind a tree. She was becoming scared. "Coo-ee," she yelled. "Ahey! ahey!" came back two voices from quite near her amid the trees. The Professor and Karik were quite near. Valya became calmer and once again resumed her walk but once again she heard behind her cautious steps. "Who is that? Who is there?" Valya jerked out, and not waiting for an answer dashed ahead into a dark thicket. She ran on stumbling, fearing to stop and not daring to look around. Suddenly in the darkness a high wall rose up. In her flight Valya all but collided with it, luckily she stretched out her arms in time. Her hands met a cold mass of rock. "Coo-ee," she shouted. "Coo-ee," Karik at once replied. Breathing heavily, Valya started to move along touching the rocky mass with her hands. The ground beneath her feet became muddy. Her feet stuck in the clay. After going a few steps she stopped. In front of her lay a big broad puddle. "I'll go around the other way," thought Valya, and turning sharply retraced her steps. She got to the dry ground and feeling the granite mass with her hands started to go round it the other way, but had only taken a few steps when she suddenly felt her hand go into space. She stopped. In the dark she could make out the black entrance to some cavern. "Here we are !" shouted Valya. "Come quickly! I've found it!" "Where are you?" yelled back Karik, running out of the trees. "Here! Over here! I've found it!" Karik looked at the rocky mass and then at Valya, and then said angrily: "What are you shouting for? That is a rock. A big rock. Do you think we can shelter under a rock?" "Inside it," replied Valya. "Just look here." She pushed her brother towards the wide, dark entrance which led into the interior of the rocky mass. Karik stepped back a little from the rocky mass, stopped, put his arms akimbo and started to examine it with the eyes of one who might be about to purchase it as a residence. "H'm, yes!" Karik gravely nodded his head. "That's not bad! Quite a hotel!" It appeared to be a long block of granite rather like a cigar. It lay amidst the trunks of huge bamboo-like trees. Some fairy story giant must have been carrying it and dropped it here. It was practically suspended in mid-air. You could put your hand between it and the ground. Karik made a trumpet of his hands and yelled: "Professor! Professor! We have found a place." "Goo-ee, I am coming. Coming!" Karik turned to Valya. Patting her on the back, he said: "Excellent young woman! This is like an aeroplane hangar made of rock. . . . We should certainly be able to lodge in it for the night. . . . Let's try and get into it." At the very entrance to the cavern there was a stump of a tree cast up against it by the flood. Karik clambered on to this and started to gaze into the darkness beyond. "It's a pity we haven't got a match," he complained. "I can't see a thing." He stretched out his hands and started to move forward into the cave. "What's it like?" Valya was impatiently waiting behind him. Suddenly Karik sprang backwards and came spinning like a top over the wet stump of the tree. With one bound away from the cavern he grasped Valya by the hand and quickly sat them both down behind a tree. "It's occupied! There's something in the hole," he whispered. "Huge! terrible!" At that moment two enormous feelers poked out of the cavern followed by a round black head. It turned first to the right, then the left, and slowly withdrew again into the hole. "Did you see that!" "Oo hoo! What whiskers! They were its whiskers, weren't they?" "Yes, feelers, of course. They all have feelers here." "We must get hold of the Professor." "Coo-ee," yelled Karik. "Coo-ee," came back the voice of the Professor. "Where are you? How am I to get to you?" "Here! here!" "Over here !" There was a noise of rustling leaves, heavy steps and a cough. Their guide appeared from behind some trees. "Well, what luck? You've found something." "We've found something." "We've practically found it." Valya pointed to the cavern. "I found that," she said proudly. The Professor went nearer and poked the rocky wall with his stick. "I recognise it. Very successful. Simply marvellous! Just the very thing we needed. An excellent hotel for travellers like ourselves." The Professor got up on the stump and gazed into the cavern. "Stop! Stop!" screamed Karik, and seized him by the arm. "What's up? What's happened?" "The hotel is occupied. Something is already in it. Got there before us." "Enormous, it has . . . oh it's really terrifying!" whispered Valya. "Don't worry! don't worry!" replied the Professor quite calmly. "I know this lodger quite well. . . . It's an old friend of mine. . . . It won't take us more than a minute to get it out of that." The Professor went back around the puddle and came to a stop near the narrow end of the rocky mass. Squatting down on his heels he felt the rock with his hands. "There we are! There we are!" The children heard him exclaim. "Just as I thought." Muttering something under his breath the Professor jumped up and dashed off into the depths of the forest. "Where has he gone?" asked Valya. "I don't know." "Where are you off to. Professor?" shouted Valya. "Stay where you are. I'll be back in a minute," came his voice through the darkness. The minute passed but the Professor didn't come back. The children could hear his steps and mutterings but what he was doing in the forest was difficult to guess. At last he reappeared. "Here I am!" he shouted, dragging behind him a long pole. Having dragged the pole up to the rocky mass he once again felt the surface of the rock with his hands and having found a round hole pushed the sharp end of the pole into it. Karik and Valya watched every movement he made, but neither of them could understand what he was up to. "It looks as if there'll be a fight," said Valya. The children bent down and searched on the ground with their hands. Karik got hold of a heavy club. Valya found a rock and firmly grasped it in her hand. Now they were ready to go at any moment to the help of the Professor. "Now, my dears. Just move on one side!" said their guide, straightening himself up. The children not hurrying moved away from the cavern and stood holding hands. "And now," grinned the Professor. "Just watch how this huge and terrible creature will take to its heels." He twisted the pole to the right and to the left, then thrust it deep into the narrow crack and then started to use it just like a poker in a fire. The monster then began to get restless. A black head covered with spines stuck up out of the main entrance to the cave and rocking dropped down again. "Come on now!" shouted the Professor, throwing his full weight against the thick end of the pole. The giant shuddered as if stung, moved out of the entrance, producing three pairs of legs, then proceeded to drag out behind it a long jointed body and made off towards the stream. The children had hardly been able to observe the details of the monster before it went over the edge of the bank and fell with a dull splash into the water. The rapid current at once seized it and it immediately disappeared in the darkness. "That was very neat!" grinned Karik. "It won't creep into a strange hotel another time." "That's fine!" gruffed the Professor good humouredly. "We won't go into details now as to who seized the territory - whether it took ours or we took its. In any case it didn't argue with us." "What!" Karik guessed. "You mean we have taken its own personal house from this giant?" "Something like it!" replied the Professor, "but it's too late now to repent. Yes, and it is not worth while in any case. Now, my dears, let's prepare our sleeping quarters. Collect twigs and leaves and little branches. Pile them by the entrance." The work became fast and furious in the dark. The Professor and the children dragged together leaves, roots and stumps of grass trees. It wasn't at all an easy job. It took two of them to drag a single leaf, and a blue petal from some flower proved almost beyond the capacity of the three of them. The Professor started to shout. "Now, now, make haste! Valya, don't walk in the water! Karik, give up that leaf! You can never lift it. . . . Now help me to drag these twigs!" All the same he was contented now. He had feared that they would have to spend the night under the open sky and now they had had this unexpected luck. "Ah, my dears," he said, with some solemnity, "how very fortunately this day has turned out for us. Really, we seem to have been born with silver spoons in our mouths, as they say in England. Just wait till we get into this refuge and you will yourselves see how lucky we are. . . ." "What about the flood?" exclaimed Karik. "B-r-r-r! It is terrible even to think of it. There wasn't much silver spoon about that." "The flood. That certainly was our darkest hour. However, we were not drowned and, my dears, it did us a useful turn. In fact, but for the flood, I do not know where we should have spent the night and what might have happened to us during the night - it was the flood that deposited the Caddis fly larva on the bank of the stream, together with its rocky home." "And it did not even defend itself!" said Valya. "So huge and yet so peaceful." "What! the Caddis fly larva peaceful?" The Professor laughed. "Well, it could hardly be described as peaceful," he continued, "under water there is nothing it fears. This greedy ruffian attacks small crabs, the larvae of insects and not infrequently devours its own children." "A sort of brigand!" "A very real brigand. Just think how it sets out to hunt. How marvellously equipped it is - the villain is clad like a knight in strong, impenetrable armour. But what a knight! Knights have helmets, breastplates and chain armour, but this gentleman drags around a regular fortress." "You mean he is sitting in it like in a tank?" asked Valya. "No, not quite," replied the Professor, "because the tank driver is carried by his tank. Whereas this creature drags its tank with it." Valya gazed at the rocky mass and shook her head. "My word, what a weight!" "Not all of them have such heavy houses," said the Professor. "Where there are reeds growing, small pieces of dead reed fall to the bottom and these creatures make their houses inside these pieces of reed; but when the bottom is sandy or rocky they construct houses out of crab shells and sand. Besides these, you come across them using houses made of simple leaves which have fallen into the water." "But why do they have two entrances to their house, one big and one small?" "In order to allow the water to circulate freely through the house." "But why let it in?" "How do you mean, let it in?" puzzled the Professor. "Of course the house is always full of water, and if this was not frequently changed the walls would get covered with moulds and the fortress of this ruffian would be taken by the assault of millions of bacteria. Bacteria thrive in stagnant water, it is just as necessary to them as air is to us." "But how cunningly you managed to get it out!" exclaimed Karik, admiringly. "Oh, that wasn't my invention," replied the Professor, modestly. "I remembered how as children we used to deal with these creatures. You just poke a straw in at the back door and the creature would look out of his front door. You wriggled it about and the creature fell out into the palm of your hand." "What did you do it for?" asked Karik, surprised. "We used to fish with them. They are the most excellent bait." "Fish?" questioned Karik, "but it would jump off; how could you attach it?" The Professor smiled. "You are not much of a fisherman, are you? Wait until you start the craze." "Oho !" Karik waved his hands. "Why, I would sit fishing for a month if I could." "Well! are you a successful fisherman?" "No," acknowledged Karik, humorously. "Somehow I don't have any luck." "There you are. Now I am telling you. You should try fishing with the larvae of a Caddis fly. I do not know any better bait for a hook than this particular larva." "I must try it." "But what happens to the Caddis fly larva now, without its case?" asked Valya. "Will it die?" "It won't die," replied the Professor, heartlessly. "Whilst we have been talking, in all probability it has already built itself half a house. You needn't worry, it won't perish. It will grow up and then turn into a flying insect." "It - into a flying insect?" "Just so," said the Professor, dragging a rose-coloured petal along the ground. "It will turn into an insect very like a moth. By the way, the Caddis fly doesn't only fly. It can run about quite well, both on land and on the water. When it is time for it to lay eggs it goes down under the water and then fastens its spawn eggs to water plants." The Professor took a look at the mountain of twigs, leaves and petals which they had dragged together during their conversation and said: "That'll do. We have so filled up the entrance that we can hardly get into the cave ourselves. Let's climb in." Karik and Valya did not need a second invitation. They clambered over the heap of twigs and made their way into the semi-darkness of a low passage. At the very end of this it was just possible to see the light coming through a narrow chink. The children went forward in the darkness feeling the walls with their hands. Their feet sank in what appeared to be a soft, delicate carpet. The walls were of the same softness and silkiness. Karik raised his hand and felt the ceiling. "It is just as soft," he marvelled. The children reached the end of the corridor and stopped in front of a round hole. Cold wind whistled round their legs. "We must stop up this window!" said Karik. "Mother never let us sit in a draught." He turned and fetched a soft petal, crumpled it up and pushed it firmly into the hole. "It won't blow now," said Valya, "but it makes it very dark. Let's go back." The children returned to the mouth of the cave where the Professor was arranging the twigs, leaves and petals. "Well! What do you think of it? Does the house please you?" asked the latter. "Do you think we can live in it?" "It is carpeted all over, carpets everywhere," said Karik, cheerfully. "This creature did itself pretty well !" few "Not at all bad!" agreed the Professor. "By the way, these carpets are not quite so simple. If anyone tries to pull the creature out of its house it catches the carpets with its claws and then no effort can make it budge. However, we must attend to our business, my dears. Help me to close the entrance or else some unexpected, uninvited guest may wander in upon us in the middle of the night." He succeeded with the help of the children in tumbling a heap of roots into the entrance, and on top of them laid twigs and on the twigs laid petals. They had now got a real barricade. There was only a narrow chink at the top of it through which the blue light of a moonlit night filtered. "Excellent," said the Professor. "Now nothing can get at us. Make yourselves .comfortable, my dears. Have a good rest." The children found a suitable spot in the angle of the wall, stretched themselves out on the downy carpet and huddled ever so close to each other. The Professor lay beside them. The gallant travellers now became still as they listened to the night wind moaning sadly outside their house and heard the dismal creaking of the grass trees. From above, from the wet leaves, heavy drops of water fell on the roof as if someone was emptying a huge bath again and again. It was warm and dry in the little house. The Professor and the children were stretched out full length. The carpet beneath them was soft as if made of down. But they could not sleep. This was their first night in the new world, so completely strange to them, in which during the course of one day they had endured so much and encountered so many dangers. Through the chink above the barricade the night sky could be seen and this sky was full of huge stars. Valya lay there with open eyes. She gazed fixedly at a bluey star which hung above the entrance to the cavern. This star was as big as a full moon, but now and then it twinkled. It was just like lying in bed at home and seeing swaying outside your window some cheerful great moon-like street lamp. Valya recalled the rumbling squeaks of the trams, the hoarse, angry hooting of the motor-cars, and the rapidly-moving beams of light which came through the window and chased each other on the bedroom walls. She closed her eyes. For a moment it seemed that she was in her own warm bed at home and could hear these familiar noises of the street. The door to the neighbouring room was closed but a yellow streak of light shone under the door. In the dining-room mother was washing up the dishes. Plates and cups chinked and teaspoons jingled. Having washed up the dishes, mother brushed the crumbs off the table and covered the table with a clean white tablecloth. Valya sighed. She remembered the crumbs of cheese which remained on the table after lunch and she swallowed the water her mouth was making. Ah! if only one of those crumbs of fresh tasty cheese was in the cave. The one crumb would be sufficient for Karik, the Professor and herself, and after they had breakfasted there would be some over. And Valya again sighed. But perhaps they would have to stop in this strange world for ever now? Would they ever get home? Would they ever see mother again? "Mother will certainly cry," said Valya, quietly to herself. "She will cry," agreed Karik. "She certainly will cry." The children started to think. What would mother be doing now? Maybe she was lying fully dressed on the bed and would raise her head from the pillow at every rustle, listening, listening. Were the children coming? On the table covered with a napkin would be the supper left out for them. The clock would be ticking quietly in the dining-room. In her dark corner the cat would be lying asleep. Tears sprang to Valya's eyes. She quietly wiped them away with her fist and frowned deeply. "No! I won't cry!" Outside the little house the midnight wind moaned. The travellers lay, each of them thinking of the big world in which they so lately lived. "It's all nonsense!" sighed the Professor noisily. "It is not possible for us never to get back. We'll get back, my dears. Don't get downhearted!" Karik and Valya did not reply. They already were deep in sound, healthy sleep. Then the Professor yawned pleasantly, turned on his side, put his fist under his head as a pillow and started to snore deeply. * * * * * The travellers slept so soundly that they never even heard the torrent of rain which beat down upon their house once again. CHAPTER XI A cold awakening - The Professor entertains the children to omelette - He opens a dressmaking establishment - The Andrena bee - The Professor and Karik vanish A WHITE FOG WAS ROLLING OVER THE COLD EARTH IN DENSE WAVES. It was almost as if milk was being poured over the silent forest filling the ravines and valleys. The tops of the trees were now engulfed in the fog and now struggling above it. The morning coldness and damp made its way into the cave through the chinks of the barricade, and it soon became as chilly within as it was already cold without. The children turned in their sleep restlessly and drew their knees up to their chins, but despite all this they could get no warmer. At last Karik could stand it no longer, jumped up, rubbed his sleepy eyes, shivered in a chilly fashion and then started to examine the sloping walls with amazement. They were silvery white exactly as if they were covered with hoar frost. He touched them. "No, it is not frost. It's - a carpet. A silvery carpet. Br-r-r! co-o-old!" Valya was lying on the floor on the carpet rolled up in a ball. She had her knees up to her closed eyes and was clasping her head with her hands. In her sleep she quietly groaned and sobbed. Karik started jumping up and down on the one spot trying to get warm, then he ran along to the end of the corridor. He began to feel a little warmer. He turned back and did a somersault once, twice, thrice and came down on Valya's feet. "What is it? What's up?" screamed Valya, jumping up. "Are they attacking us?" Shaking and shivering, she stood there gazing at Karik with sleepy, frightened eyes. "What's the matter?" Karik was surprised. "It's only me. Wake up. You are absolutely frozen - quite blue. Come on, let's wrestle. You'll soon get warm. Here we go!" He jumped towards Valya and dancing around her tried to pull her about. "Get away!" Valya pushed him hard. As he fell to the ground he held on to his sister, and they both rolled on the soft downy floor. Valya sobbed. "Go away! No one is fighting you and you mustn't fight." "Oh, you touch-me-not snail! I only wanted to warm you up." "And I only want to sleep !" "All right, go to sleep," snapped Karik. Outside someone was moving, knocking against things, coughing and then suddenly started singing: "Where did you dine, sparrow hen? In the zoo with the lion in his den - I found he left quite a bit - And I drank with a seal in her pit." It was the Professor; very, very out of tune. "There you see," said Karik. "Everyone is up and singing, but you are still wallowing in bed - " He ran to the entrance and shouted. "Professor, where are you?" "Here! here! Get up, my dears, breakfast is ready." "What is there for breakfast?" "A magnificent omelette." "An omelette?" Oho! this was more interesting than being frozen, and Valya was soon on her legs. She seized Karik by the hand. "Let's go!" The children pushed aside the twigs and leaves which had blocked up the entrance to the cavern and burst out into the fresh air. But no sooner had Valya got out than she at once started to clamber back. "Whatever is it, Karik? Where have we got to?" she whispered croakily, holding Karik's hand tightly. There was no earth or sky or forest to be seen. In the air there floated a cloud of glittering bubbles. The bubbles twisted around, collided with one another, slowly descended, and then once more were wafted upwards. A snowstorm of chalky white bubbles was swirling around them. "Professor," shouted Karik. "Whatever is all this? What is it that is swirling around?" "Fog," replied the voice of the Professor. He was quite near the children but they could not see him. "You don't mean that an ordinary fog is like this?" said Valya. "Yes, my little Valya. This is an ordinary fog but as we usually only see it like this under microscope." The Professor's voice sounded muffled as if he was down in a deep hole. The children stretched out their hands trying to catch the bubbles, but they only broke and trickled cold water along their fingers. "Well, where have you got stuck now?" came the voice of the Professor through the turbid fog. "Hurry up, I have got something here more interesting than a fog." Karik and Valya, proceeding cautiously, headed towards the voice of the Professor. "Have you got lots of omelette?" shouted Valya. "If you hurry there may be a little left for you to try - you'd better come quickly before I have eaten it all." Through the fog a queer light flickered. "A fire!" yelled Karik. Could the Professor have lit a wood fire? But where did he get the matches from? Valya dashed towards the fire in great spirits. "A camp fire, a real fire ! We have got a camp fire!" she shouted. Before them, weaving through the clouds of fog bubbles, there danced the flames of a camp fire. A tall column of greenish flame rose to the very tops of the dark, wet forest. The Professor was squatting by the logs. He was tending the brushwood which was crackling in the fire, using a thick stick as a poker. "Hurrah!" cheered the children in unison. They ran up to the fire and holding each other's hands started to dance some sort of a wild dance. "Hop-la!" yelled Valya, jumping. "Hop-la-la-la," bounced Karik, red in the face. "Quieter, quieter!" The Professor tried to stop them. "You will break the dish in pieces. Far better sit down and eat!" The ashes gave out such heat that it was quite impossible to stand near them. All the same there was not much wood burning. Valya seized an armful of brushwood and made to throw it on the fire, but the Professor stopped her. "It is not necessary, the omelette is cooked." "But the fire. It is goi