PLANS FOR EXECUTING IT. 1858-59. ÆT. 38-39.
I HAD left London before the end of June; and it was not until the first of July that the two papers by Mr. Darwin and Mr. Wallace on the operation of Natural Selection in causing divergence of species, were read before the Linnæan Society. I have but a vague impression of the way in which this event became known to me; but my belief is that I remained in ignorance of it until my return to town in October.
A reason confirming me in this belief is furnished by a paragraph contained in a letter to my mother dated 29 November, which runs as follows:--"I have been distributing a few volumes of my Essays. Enclosed are some of the acknowledgments, from Dr. Latham, Dr. Hooker, and Mr. Charles Darwin." As the volume had been published in December, 1857, I was, when I came upon this passage, at a loss to understand why this distribution had not been made until November, 1858. But the probable explanation is that, when I learnt the nature of Mr. Darwin's paper and learnt that Dr. Hooker accepted his interpretation, I sent copies of the volume to them and to a few others, because of the essay on the De-