My dear Sir.

I received several days ago either from you or some one else, the New York Independent & was much gratified by the excellent review of my book.—¹ Yesterday I received the Press. with your Essay.—² I am glad that the parts which you have marked are not accurate, for as given they are almost a burlesque, on what Lubbock & that excellent observer H. Müller have said.³

I have this day begun to prepare for press observations continued for 10 years on the effects of crossing plants, & I think that these will convince you & every one else that it is a great advantage to plants to intercross—⁴ It is however still more important for every plant to propagate itself by self fertilization unless crosses can be effected with much certainty— I am very much obliged for your kind letter & remain my dear Sir | Yours very faithfully | Ch Darwin.