Vol. XXXV.] 112 



come about by the action o£ the host only, the tendency to 

 reject suspicious-looking eggs being regarded as selection's 

 natural reply to special victimization by Cuckoos. The 

 readiness to "sit on anything/' on which he had laid 

 stress, might mean no more, he now saw, than that the 

 species in question had not been greatly victimized. The 

 question could be experimentally tested. Even so, with 

 unpleasantness present in the foster-parent's egg, enemies 

 would have contributed to the likeness. 



He thought that other criticisms were partly based on a 

 lack of knowledge of the experiments, the results of which 

 would be published in due course. It must be remembered 

 that an enemy which was hungry would take anything ; this 

 explained the desertion or removal by parents of their eggs 

 when discovered. 



Mr. D. A. Bannerman exhibited and drew the attention 

 of Members to the copy of a comprehensvie work on North 

 American Ornithology, which, as Editor of the ' Bulletin/ he 

 had received from the University of the State of New York. 

 This was entitled ' The Birds of New York/ part 2, by E. H. 

 Eaton, and contained an account of all the birds known to 

 inhabit that State. The book contained 106 coloured plates 

 and over 300 species were figured, besides a number of good 

 photographs depicting nesting-sites, &c. 



The Discussion which it was intended to hold at the next 

 meeting of the Club on ''The Effect of Environment on the 

 Evolution of Species," opened by Lord Rothschild, Ph.D., 

 E.R.S., is unavoidably postponed until the June Meeting. 



The Editor urgently requests Members who 

 have MSS. for publication to place them in his 

 hands not later than the Meeting at which 

 their communication is to be made. 



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