THE CAUSATION OF DISEASE. 209 



weeded out, by reason of their having less capacity than the 

 others to resist the average or necessary-mal-E. On the 

 other hand, such premature deaths may be due not so much to 

 specific inborn " tissue deficiencies," as to excessive quantities 

 of mal-E, and, in considering this E, we must not merely 

 include the specific E which caused the disease, but one ex- 

 tending, it may be, over a long period. 



