From J. S. Henslow [c. 14 April 1839]
Author: | John Stevens Henslow |
Addressee: | Charles Robert Darwin |
Date: | [c. 14 Apr 1839] |
Classmark: | DAR 185: 63v |
Letter no: | DCP-LETT-505 |
From George Henslow 2 December 1865
Summary
Has been writing a review of CD’s "Climbing plants" for Popular Science Review [5 (1866): 55–65].
Author: | George Henslow |
Addressee: | Charles Robert Darwin |
Date: | 2 Dec 1865 |
Classmark: | DAR 166: 152, 152/1 |
Letter no: | DCP-LETT-4944 |
To William Herbert [c. 1 April 1839]
Summary
Questions on breeding of plants: variation in established versus new varieties; predominance of wild species and old varieties when crossed with newer forms; predominance of males versus females; correlations between ease of hybridisation and tendency to vary and undergo cultivation; reversion; correlations between hybridisation and geographic distribution.
In WH’s Amaryllidaceae [1837], does he intend to say crossing is inimical to fertility?
[Sent via J. S. Henslow; note to amanuensis Syms Covington.]
Author: | Charles Robert Darwin |
Addressee: | William Herbert, dean of Manchester |
Date: | [c. 1 Apr 1839] |
Classmark: | DAR 185: 62 |
Letter no: | DCP-LETT-502 |
To William Herbert 26 June 1839
Summary
CD is led to believe there are no true permanently inbreeding, sexually reproducing beings. Thanks for replies to breeding questions.
Asks for clarification of Hippeastrum crosses: is selfing or crossing with individual of same species intended and was increased fertility due to constitution of foreign parent or due to the pollen coming from another plant? Has WH known any hybrid or mongrel to revert or to vary in a manner unlikely to be effect of soil?
Sends Journal of researches.
Author: | Charles Robert Darwin |
Addressee: | William Herbert, dean of Manchester |
Date: | 26 June 1839 |
Classmark: | DAR 185: 65–6 |
Letter no: | DCP-LETT-523 |
To J. D. Hooker [10–11 November 1844]
Summary
Origin of Antarctic brash ice.
Further on case of Lycopodium: does JDH know any genera of plants whose species are variable in one continent but not in another? Discussion on variations between floras as regards species richness, and factors affecting geographical distribution. On species, CD expects "that I shall be able to show even to sound naturalists that there are two sides to the question of the immutability of species; – that facts can be viewed and grouped under the notion of allied species having descended from common stocks". Mentions books and papers for and against species mutability. CD believes past absurd ideas arose from no one’s having approached subject on side of variation under domestication.
Would like to see Clarke’s paper
and would welcome visit from JDH.
Author: | Charles Robert Darwin |
Addressee: | Joseph Dalton Hooker |
Date: | [10–11 Nov 1844] |
Classmark: | DAR 114: 19 |
Letter no: | DCP-LETT-789 |
From William Herbert [c. 27 June 1839]
Summary
Rejects necessity of outbreeding and any general law of reversion.
Describes further experiments with Hippeastrum showing greater fertility with foreign pollen than with individual’s own pollen or with pollen from another individual of same species.
Does not believe CD’s questions about reversion can be answered in present state of knowledge.
Author: | William Herbert, dean of Manchester |
Addressee: | Charles Robert Darwin |
Date: | [c. 27 June 1839] |
Classmark: | DAR 185: 67 |
Letter no: | DCP-LETT-524 |
To Journal of Horticulture [17 May 1861]
Summary
Thanks Mr Beaton for his answer [to 3147].
Asks further questions on points raised in Beaton’s previous papers: whether crossing white and blue varieties of Anemone apennina produced many pale shades; whether the Mathiola incana and M. glabra which crossed freely were artificially or naturally crossed.
CD is delighted by Beaton’s assertion that "not a flower in a thousand is fertilised by its own immediate pollen".
Recounts his experiments with Leschenaultia formosa to show insect fertilisation.
Author: | Charles Robert Darwin |
Addressee: | Journal of Horticulture |
Date: | [17 May 1861] |
Classmark: | Journal of Horticulture, Cottage Gardener, and Country Gentleman n.s. 1 (1861): 151 |
Letter no: | DCP-LETT-3162 |
To J. S. Henslow 10 November [1855]
Summary
Thanks for seeds. Feels "almost foiled" in his experiments on sea transport – has found few plants that float after more than a week’s immersion.
Sends a list of queries [see 1779] on hollyhocks to put to growers.
Author: | Charles Robert Darwin |
Addressee: | John Stevens Henslow |
Date: | 10 Nov [1855] |
Classmark: | DAR 93: A103–A105 |
Letter no: | DCP-LETT-1778 |
To Charles Turner [1 April – 16 June 1863?]
Summary
Asks correspondent whether, when growing hollyhocks, he finds it necessary to space out the different varieties to prevent crossing and thus to obtain true seed [see Variation 2: 108].
Author: | Charles Robert Darwin |
Addressee: | Charles Turner |
Date: | [1 Apr – 16 June 1863?] |
Classmark: | DAR 96: 12 |
Letter no: | DCP-LETT-3886 |
To George Henslow 15 [June 1866]
Summary
CD believes most strongly in reversion. J. G. Kölreuter’s, K. F. v Gärtner’s, and some of Charles Naudin’s cases leave no doubt in his mind. Forgets whether Herbert gave cases but in conversation he certainly believed in it. Thinks Gärtner is right to say reversion occurs only rarely in plant hybrids which have not been cultivated. [See 5120.]
Variation
Author: | Charles Robert Darwin |
Addressee: | George Henslow |
Date: | 15 [June 1866] |
Classmark: | DAR Library: tipped into George Henslow’s copy of Variation |
Letter no: | DCP-LETT-5123A |
Matches: 1 hit
- … William Herbert published many works on hybrid plants; CD had discussed Herbert 1837 and 1846 in detail in the manuscript for his ‘big book’ on species (see Natural selection ). Heavily annotated copies of Herbert 1837 and 1846 are in the Darwin Library–CUL (see Marginalia 1: 372–6). CD cited Herbert on cases of reversion in Variation 1: 377, 388. CD corresponded with Herbert on reversion in 1839 (see Correspondence vol. 2), and visited him in 1845 and 1847 (see Correspondence vol. 3, letter …
letter | (10) |
Darwin, C. R. | (7) |
Henslow, George | (1) |
Henslow, J. S. | (1) |
Herbert, William | (1) |
Darwin, C. R. | (3) |
Herbert, William | (2) |
Henslow, George | (1) |
Henslow, J. S. | (1) |
Hooker, J. D. | (1) |
Darwin, C. R. | (10) |
Herbert, William | (3) |
Henslow, George | (2) |
Henslow, J. S. | (2) |
Hooker, J. D. | (1) |