242 GEOEGE JOHN KOMANES isss- 



him from thinking that the failure of the seeds to 

 flower here was due to any negligence on my part. 



Yes, it is the same Eev. Mr. Gulick whom you 

 describe that wrote the paper on 'Divergent Evolution ' 

 to which I alluded, and which is a most remarkable 

 paper in every way, though not at all easy to master. 

 Wallace completely misunderstood it in his letter to 

 1 Nature.' It was his work in shells that first led Mr. 

 Gulick to study Isolation, and he has been at work 

 upon the subject ever since. To the best of my 

 judgment, he has demonstrated the necessity of what 

 he calls ' segregate breeding ' for ' polytypic evolu- 

 tion,' and in this connection has worked out the idea 

 of physiological selection (which he calls segregate 

 fecundity) much more fully than I have. 



It is most astonishing to me with what a storm 

 of opposition this idea has been met in England, and 

 how persistent is the misunderstanding. In Ger- 

 many and America it is being much more fairly 

 treated, but meanwhile I intend to keep it as quiet as 

 possible, till I shall be in a position to publish a large 

 body of experimental observations. As far as time 

 has hitherto allowed, the results are strongly corrobo- 

 rative of the theory. 



I have now read your admirable book, and my 

 only objection to it is that it seems in such large 

 measure to anticipate the publication of my own 

 course of lectures on the theory of Evolution which 

 I am now giving at the Eoyal Institution. But, on 

 the other hand, this will relieve me of the necessity 

 of printing a good deal of my matter, as it will be 

 sufficient to refer to your book in mine when the two 



