My dear M^r. Darwin,

I venture to send you the enclosed prospectus of the forthcoming work by my brother and M^r. Dyer, in the hope that you will kindly support the book by your subscription. Hardwicke will not undertake to publish the book unless the expense is “guaranteed” by a certain number of subscribers for copies (I think 300).¹

I am very glad that you found my ocelli case of use. I have looked in vain for any instance of an ocellated ♂ and non-ocellated ♀ of the same species.²

I am amused to notice a remark in the last “Saturday Review” (in a critique on Agassiz and spouse’s Amazons Travels), that the principal objection to be noticed is that Agassiz seems to have conducted his researches in that region with the express object of making discoveries adverse to the Darwinian theory!³

Believe me | Faithfully yours | Roland Trimen

Charles Darwin, Esqre. | &c —