LIFE IN STREAM AND POND 



285 



American Museum of Natural History 



Turtles make good pets. You can keep 



them in a pen in your yard. Sink a small 



tub in the ground and give them plenty of 



shade in hot weather. 



excellent addition to the 

 aquarium and will often 

 lay their eggs on the glass 

 walls, where they can be 

 watched in their develop- 

 ment with a hand magni- 

 fier. Fresh- water mussels 

 and tiny clams are often 

 found. Both of these live 

 nicely in aquariums. Bring 

 in as many different kinds 

 as you can and try to iden- 

 tify them with the aid of 

 some of the books men- 

 tioned at the end of the unit. 

 Crustaceans which have jointed bodies and jointed legs 



are also likely to be r ^~~ - . , , __ ,^, 



found. The largest 



crustacean we are 



likely to see is the 



crayfish, which will 



often be found in shal- 

 low, slow-running 



brooks. It makes its 



home in tunnels in the 



banks of the stream. 



It has a jointed body 



covered with a hard 



skeleton, with five 



pairs of walking legs, 



the front ones armed 



with pincers, two pa irs i ^.g| 



of feelers, and eyes Fresh water mussels are called clams by most 

 mmmfprl rm mnvahlp P e P le - Notice the siphon, through which the 



animal gets its food and oxygen, and the mus- 

 Stalks, like the lobster. cular foot, by means of which it moves. 



mucct 



