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1860-1869::1863::05::31 in date 
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From:
Charles Robert Darwin
To:
Asa Gray
Date:
31 May [1863]
Source of text:
Gray Herbarium of Harvard University (84)
Summary:

AG’s review of Alphonse de Candolle’s paper [Am. J. Sci. 2d ser. 35 (1863): 430–44] is excellent.

Does not AG consider that orchids oppose Oswald Heer’s view that species arise suddenly by monstrosities?

Infers that AG cannot explain the angles of phyllotaxy; has been looking at Carl Nägeli on the subject.

Reports Gaston de Saporta’s belief that natural selection will ultimately triumph in France.

Is working slowly at Variation.

Reports his observations on the imperfect flowers of Viola and Oxalis.

Contributor:
Darwin Correspondence Project