18 WESTERN SERIES OF READERS. 



their coverings are sometimes called saucer-shells; 

 for some of their empty tents, when turned over, 

 might be used for little shallow dishes, like very 

 small saucers. On the coast of Mexico there are 

 some that are large enough for mush-bowls, but 

 they do not grow so large in our part of the 

 ocean. 



A few of the tents have a kind of chimney-hole 

 at the top, and the creature that lives in such a 

 shell is called a keyhole limpet. Although the 

 opening looks like a keyhole, there is no lock con- 

 nected with it, but only a fold of the animal's 

 mantle, and it really serves as a kind of chimney 

 or ventilating-flue for keeping the tent sweet and 

 clean. In those limpets which have no chimney 

 to the shell, all the circulation of water must be 

 carried on under the raised edges of the tent. 



Most of these little campers have a pleasant 

 habit of pitching their tents in the same spot 

 every night, however much they may have wan- 

 dered during the day. Home is home, even if it 

 is only a little flat spot on the side of a huge cliff. 

 And so I trust you have found, whenever you 

 have been camping, that the best part of it all was 

 the coming home again. 



Of course our limpets get hungry and must 

 search for their food, but, fortunately, it consists 



