DEGENERATION. 



279 



The Sacculina is the type of race degeneration among 

 animals and plants. When the stimulus to individual 

 activity is lowered and the conditions of 

 environment are such that destruction 

 does not follow reduced activity, we 

 have continuous degeneration. This is 

 the condition of animal pauperism. The 

 same general laws hold good among men. Inactivity and 



Animal pauper- 

 ism homologous 

 with human 

 pauperism. 



Fig. 19. — Sacculina after leaving the egg. (After Lang.) 



dependence, protection in idleness, bring about deterio- 

 ration and end in weakness, incapacity, and extinction. 



