THE METAZOA 



of this enemy in the body as early as 

 possible in his separate existence and then 

 cut him out with the surgeon's knife before 

 he can shed off any of his living germs. 

 There is a faint hope that a sarcoma may 

 find its match in a foe belonging to the 

 unicellular camp, for in some cases an 

 artificial erysipelas caused by inoculation 

 with its bacteria has put an end to these 

 growing tumors, and the mysterious rays 

 given off by the element radium while un- 

 dergoing atemic disintegration have, tem- 

 porarily at least, put a stop to spreading 

 superficial cancers. But when we con- 

 sider how living these malignant things 

 are, the prospect of successfully dealing 

 with them is much less than with the old 

 unicellular enemies. 



