Dear Sir,

I am much obliged for the two plates received this morning.¹ They both seem to me excellent. Nothing can be better than the manner in which the secretion round the glands is shown. The drawing of the Volvox² tells the whole history of the organism in a wonderfully clear manner; I cannot doubt but that the publication of your atlas will be most useful to all who have to teach Botany; & I hope that you may be successful in finding a good publisher. I know from experience how useful large diagrams are to a lecturer, for when I was at Cambridge above 40 years ago the Professor of Botany there (Henslow) made a large number of diagrams at the cost of much time; & he used to say that the great success & popularity of his lectures was largely due to these diagrams, which we nearly on the same scale as yours, but not nearly so well executed.³

Wishing you all success, I remain, dear Sir, | Yours faithfully | Ch. Darwin