Gives his opinion of a MS on geology. It is not really a scientific work. It might sell well, but CD's opinion on success of sale is worthless.
12 Upper Gower St
I have looked over the M.S. sheets, but do not feel myself competent to give any decided opinion upon the probability of success in their publication.— But thus far I dare venture to say;—that the book will never be highly esteemed by really scientific man.— The definitions (in many cases merely translations of arbitrary terms given to classes) are too short to be of any service & there are not a few trifling inaccuracies in matter & style. In order that a work of this nature should become of authority the author's name should be known, as having worked in the department of science treated of, which is not the case in this instance.
I presume the recommendation of scientific men would alone give permanent success to a compilation of the kind in question, and as I have said such recommendation I do not believe it will ever receive. Nevertheless, as there are at present many general readers in Geology, to whom I do not doubt this work would be useful & possibly very useful (if cheap) I should not be surprised at its having a considerable sale, but I repeat on this point my opinion is worth nothing—
Of course my name will not be mentioned to the author, whose labour on such a work, if thrown away, one must much regret.—
Believe me dear Sir | Yours truly | Chas. Darwin
P.S. I leave town on August 24
Be good enough to return me the Phil. Journal, when finished with
- f1 531.f1The addressee is identified by the distinctive ‘1839’ with which the letter is endorsed and which is identical to the writing on letter of 2 August  addressed to William Shoberl, an assistant to Henry Colburn, the publisher of the Journal of researches.
- f2 531.f2According to the ‘Journal’ (Correspondence vol. 2, Appendix II) CD left for Maer on 23 August and then attended the British Association meeting in Birmingham. He returned to London on 2 October.