A GROUP OF ROCK-LOVERS. 17 



on the granite rocks or breaking into foam on the 

 sandy beach; perhaps it was in a field, or even in 

 a back yard; but anywhere under a tent there is 

 a charm wliicli you cannot get anywhere else. 



Now, there is a whole group of mollusks that 

 live in tents all their lives, and they always pitch 

 their tents on the rocks. And each tent is just 

 big enough for one camper to live in; and if the 

 camper grows, why, he builds on to the edge of his 

 tent, and keeps it just big enough to cover him 

 whenever he settles down for a good night's rest. 



When you went camping you set up poles, and 

 spread the tent-cloth over them, and fastened it 

 all down with ropes and pins. But our little mol- 

 lusk campers make their tents of shell, and they 

 are so stiff and firm that there is no need of poles 

 and ropes to keep them spread. 



You used to come out of your tent in the morn- 

 ing and rush down to the brook to wash your 

 hands and face. Our little campers get up too, 

 but they always carry their tents with them, on 

 their backs; and as for washing their faces, they 

 never need to be troubled with that duty, for they 

 live in the water most of their lives, and they get 

 their faces washed with clear, cold water, whether 

 they wish it or not. 



These little campers are called limpets, and 



