Look before you leap;  
The water may be deep.
 
That is the very best kind of advice, but most people find that out when it is too late. Grandfather Frog did. Of course he had heard that little verse all his life. Indeed, he had been very fond of saying it to those who came to the Smiling Pool to ask his advice. But Grandfather Frog seemed to have left all his wisdom behind him when he left the Smiling Pool to go out into the Great World. You see, it is very hard work for any one whose advice has been sought to turn right around and take advice themselves. So Grandfather Frog had been getting into scrapes ever since he started out on his foolish journey, and now here he was in still another, and he had landed in it head first, with a great splash.
 
Of course, when he had seen the cool, sparkling water of the spring, it had seemed to him that he just couldn't wait another second to get into it. He was so hot and dry and dreadfully thirsty and uncomfortable! And so—oh, dear me!—Grandfather Frog didn't look at all before he leaped. No, Sir, he didn't! He just dived in with a great long jump. Oh, how good that water felt! For a few minutes he couldn't think of anything else. It was cooler than the water of the Smiling Pool, because, as you know, it was a spring. But it felt all the better for that, and Grandfather Frog just closed his eyes and floated there in pure happiness.
 
Presently he opened his eyes to look around. Then he blinked them rapidly for a minute or so. He rubbed them to make sure that he saw aright. His heart seemed to sink way, way down towards his toes. "Chugarum!" exclaimed Grandfather Frog, "Chugarum!" And after that for a long time he didn't say a word.
 
You see, it was this way. All around him rose perfectly straight smooth walls. He could look up and see a little of the blue, blue sky right overhead and ............