J 10 



The Study of Animal Life 



cogent. In another part of this book I have given examples 

 of the state of lifelessness which drought induces in some 



Fig. 64. — Axulotl (in the water) and Amblystoma (on the land). 



simple animals, and from which returning moisture can 

 after many days recall them. 



Changes may also be due to the chemical composition 

 of the medium, as was established by the experiments of 



Fig. 65. — Side view of male Artonia salina (enlarged). 

 (Front Chambers s Encyclop.) 



Schmankewitsch on certain small Crustaceans. Among the 

 numerous species of the brine-shrimp Artemia, the most 

 unlike arc A. salina and A. milhausenii ; they differ in the 



