A 



IV 



CLIMBING THE ANIMAL TEEE 



,/;a^^1.LENDID!" cried Nat and Rap to- 

 gether, as soon as they realized what 

 Dr. Roy said. " When shall we have 

 the stories ? " 



" What is a campfire ? Is it made 

 of logs or coal ? " asked Dodo. 



" Where are you going to have 

 the camp? Here in the wonder 

 room ? " asked Olive, who was as 

 much surprised as her cousins. 



" What are no-footed Americans, fishes / " persisted 

 Dodo. 



" Fishes have no feet, and yet these no-footed beasts 

 are not fishes. The Americans you shall hear about 

 will all be our blood brothers, the Mammals — the 

 highest branch of the animal tree, the one that I 

 said has so many smaller branches that it seems almost 

 like a whole tree by itself." 



"M — mammals; m — milk," said Dodo, proud at 

 not having forgotten. " But, Uncle Roy, we can't 

 see all these M — mammals outdoors, as we did the 

 birds, and there aren't any here in your Avonder room. 

 How can we tell how they look ? " 



" You will probably see some of the smaller ones 



31 



