CONCLUSION 99 



1901, containing an address delivered by me at Brooklyn, New 

 York, in May of that year. 1 That address I had not looked up 

 for a decade or so, and it was with not a little surprise that I 

 found laid down there the physico-chemical conception of in- 

 heritance here given, and the doctrine of direct inheritance of 

 metabolic conditions, such as gout and of disturbances of the 

 internal secretions. Rather, therefore, the apology should be 

 that I have plagiarized myself in so wholesale a manner. I shall, 

 however, be satisfied if it is demonstrated that the work of 

 medical men of this generation, of pathologists and bacteriologists 

 work formed upon the observations and methods of the great 

 biologists of the past is repaying the debt to biology by estab- 

 lishing principles which are basal for general biological advance. 



1 See Pt. II. Chap. II. 



