"That's easy and no riddle at all," rumbled the A-B-Sea Serpent, who had been listening attentively to the Scarecrow's remarks. "I'll stretch across, and you can walk over." Suiting the action to the word, he began backing very cautiously toward the river so as not to shake the Scarecrow off his feet. "Mind your P's and Q's!" called the Rattlesnake warningly. It was well that he spoke, for the A-B-Sea Serpent had doubled the P and Q blocks under, and they were ready to snap off. Finally, however, he managed to make a bridge of himself, and the Scarecrow stepped easily over the blocks, the huge serpent holding himself rigid. Just as he reached Y, the unfortunate creature sneezed, and all the blocks rattled together. Up flew the Scarecrow and escaped falling into the stream only by the narrowest margin. "Blockhead!" shrilled the Rattlesnake, who had taken a great fancy to the Scarecrow. "I'm all right," cried the Scarecrow rather breathlessly. "Thank you very much!" He sprang nimbly up the bank. "Hope you have a pleasant vacation!" "Can't, with a rattlepate like that." The A-B-Sea Serpent nodded glumly in the Rattlesnake's direction. "Now don't quarrel," begged the Scarecrow. "You are both charming and unusual, and if you follow that Yellow Road, you will come to the Emerald City, and Ozma will be delighted to welcome you." "The Emerald City! We must see that, my dear Rattles." Forgetting his momentary displeasure, the A-B-Sea Serpent pulled himself out of the river, and waving his X Y Z blocks in farewell to the Scarecrow, went clattering down the road, the little Rattlesnake rattling along behind him. As for the Scarecrow, he continued his journey, and the day was so delightful and the country so pleasant that he almost forgot he had no family. He was treated everywhere with the greatest courtesy and had innumerable invitations from the hospitable Munchkins. He was anxious to reach his destination, however, so he refused them all, and traveling night and day came without further mishap or adventure late on the second evening to the little Munchkin farm where Dorothy had first discovered him. He was curious to know whether the pole on which he had been hoisted to scare away the crows still stood in the cornfield and whether the farmer who had made him could tell him anything further about his history. "It is a shame to waken him," thought the kind Scarecrow. "I'll just take a look in the cornfield." The moon shone so brightly that he had no trouble finding his way about. With a little cry of pleasure, he pushed his way through the dry cornstalks. There in the center of the field stood a tall pole--the very identical bean pole from which he had descended. "All the family or family tree I've got!" cried the Scarecrow, running toward it with emotion. "What's that?" A window in the farmhouse was thrown up, and a sleepy Munchkin thrust out his head. "What are you doing?" he called crossly.