88 WESTERN SERIES OF READERS. 



because the former are more dull in color and 

 more rough in appearance. 



The largest Olive-shells that you see in collec- 

 tions and museums come from parts of the ocean 

 which are much warmer than the water on our 

 coast. Some of them are three or four inches long, 

 and they are very beautiful. The largest one has 



Figure 41. 



markings on it, which make it look like a camp of 

 soldiers; and so it is called the Tent-shell. 



In the sand and gravel along the coast you may 

 sometimes find other interesting shells, though 

 they seldom live in groups, like the olives. One 

 of the prettiest is shown in Figure 41, and is 

 called the Red-lined Sand-shell. The shells are 

 pure white within, and on the outside there are 

 stripes of light red, like the rays which come up 

 from a fine sunset. 



