From George Henslow 7 April 1866
10 South Crescent | Bedford Sq | W.C.
April 7th /66
My dear Sir
I send by this post a few copies of the “Science Gossip”, which I happen to have as duplicates, so that you can obtain a knowledge of their General character.1 Also one or two Nos. of the Leisure Hour in which I have written short papers, that may perhaps interest you, as being connected with my fathers doings. Please to accept them. (One has not my name attached viz: “Phosphate Nodules”.)—2
I have already exhibited the Coryanthes—you so kindly gave me—to the delight & astonishment of several: it certainly is a most wonderful contrivance.3
With regard to the remark I made about the relative Nos. expressive of the fertility of Primrose.— I was referring to the Tab. II p. 89. P. veris
good pods Weight of seed in grains Long: styled as 100 to 42*
Homoc.) long styled) ‘ 100 ’ 62
Heteroc.) Short styled:) ‘ 100 ’ 30
Homoc.) Short styled) ‘ 100 ’ 44*4
Comparing these (*) it seems, they run very close!5 does that proportion mean that the seed from every 100 good pods weighed, on average (by calculation of course) 42 grains?
Again thanking you for a very pleasant visit last Monday,6
Believe me | My dear Sir, | Yours very faithfully | Geo Henslow
C. Darwin Esq.
Sends copies of Science gossip and The leisure hour.
His criticism of Primula fertility referred to table 2 [Collected papers 2: 56] where weight of seeds produced from good pods by long-styled homostylous cross and short-styled heterostylous cross are virtually identical.
Please cite as
Darwin Correspondence Project, “Letter no. 5048,” accessed on 4 May 2016, http://www.darwinproject.ac.uk/DCP-LETT-5048