J 890 ON WEISMANN'S THEOEY 227 



I will send you ' Perrier ' on my return to town next 

 month. 



Lord Morton's experience is so universally that of 

 all breeders of live stock, that I never knew anybody 

 ever doubted it. But, if they do, there is no reason 

 why they should not satisfy themselves on the point. 

 For my part I do not feel that the fact requires any 

 corroboration as regards mammals, though I have 

 some experiments going on with birds. Lastly, the 

 apparently analogous cases in plants are still worse 

 for Weismann's theory, and they stand on the best 

 authorities. 



I enclose a letter received by same post that 

 brought yours. It is from a former keeper of mine 

 who is now more in the moorlands. Other applications 

 are out, so I hope some of them will be successful. 

 Very little doubt it will prove to be temperature. I 

 found a dead stoat here to-day ; it had not turned 

 white at all, but then the season is very mild. 



The Secretary of the E.I. is Sir F. Bramwell, 

 Bart., F.E.S. You had better write to him. Also to 

 his son-in-law, Victor Horsley, who is more of a 

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

 ought to jump at you. 



Yours very truly, 



G-. J. Bomanes. 



Geanies, Boss-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 



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