1890 ON WEISMANN'S THEOEY 223 



biologist. Tell Bramwell, if you like, that I think he 

 ought to jump at you. 



Yours very truly, 



G. J. KOMANES. 

 Greanies, Eoss-shire, N.B. : November 6, 1889. 



My dear Poulton, — Many thanks for your paper, 

 which is the clearest exposition I have yet seen of 

 Weismann's views. But how about your allusion to 

 experiments in grafting ? As regards plants, there is a 

 good deal of evidence as to the possibiHty of a graft- 

 hybrid. As regards animals, fifteen years ago I spent 

 an imjnensity of time in experimenting, and could not 

 then find that there was any literature on the subject. 

 Nobody who had grafted animal tissues had done so 

 with any reference to the heredity question, nor 

 do I know of any publications on the subject since 

 then. 



Yours very truly, 



Gr. J. EOMANES. 

 Geanies, Eoss-shire, N.B. : November 11, 1889. 



My dear Poulton, — Although I spent more time 

 and trouble than I like to acknowledge (even to my- 

 self) in trying to prove Pangenesis between '73 and 

 '80, I never obtained any positive results, and did 

 not care to publish negative. Therefore there are no 

 papers of mine on the subject, although I may fairly 

 beheve that no other human being has tried so many 

 experiments upon it. No doubt you will think that 

 I ought to regard this fact as so much negative evi- 

 dence in favour of the new theory; and, up to a 



