214 CHARLES DARWIN. 



criticised, even Bates being adverse to it. Subsequent 

 work has abundantly justified it as by far the most 

 important addition to the subject since Bates's 

 original paper. In fact, many cases which have 

 been up to the present explained under the theory 

 of true (Batesian) mimicry are now believed to 

 come under that which we owe to F. Miiller viz. 

 convergence between specially protected forms for 

 mutual benefit. 



An interesting paper by Dr. F. A. Dixey, pub- 

 lished in the Transactions of the Entomological 

 Society for the present year (1896), contains convinc- 

 ing arguments in favour of this view as regards 

 some of the Pieridce of South America in relation 

 to the Heliconidce and Papilionidce which they 

 resemble. 



It is of the highest interest to learn that the first in- 

 troduction of this new and most suggestive hypothesis 

 into this country was due to the direct influence of 

 Darwin himself, who brought it before the notice of 

 the one man who was likely to appreciate it at its 

 true value and to find the means for its presentation 

 to English naturalists. 



In the next year Meldola wished to translate 

 further papers of Fritz Mliller's, and received the 

 following letter on the subject : 



" Nov. 25/80. "Down. 



" MY DEAR SIR, I can well believe that your labour must 

 have been great, and everyone is bound to aid you in any way. 

 " No. I. of F. Miiller's paper is in the August no. for 1877. 



