10 Trans. Acdd. Sci. of iSt. Louis 



ly certain individuals are affectiMl by cancer. This 

 would l)e explained through the difference in hereditary 

 predisposition and the action of stimuli, and these will 

 remain the important causes of the typical mammalian 

 cancer independent of the possible, but not jirohable, 

 action of microorganisms. 



