To J. D. Hooker [after 20 January 1857]
Summary
CD finds Alphonse de Candolle very useful, though JDH has low opinion.
CD argues for accidental introductions explaining some odd distributions, e.g., New Zealand vs Australian plants.
CD’s method.
Diverging affinities in isolated genera.
Author: | Charles Robert Darwin |
Addressee: | Joseph Dalton Hooker |
Date: | [after 20 Jan 1857] |
Classmark: | DAR 114: 190 |
Letter no: | DCP-LETT-2033 |
To J. D. Hooker 17 January [1857]
Author: | Charles Robert Darwin |
Addressee: | Joseph Dalton Hooker |
Date: | 17 Jan [1857] |
Classmark: | DAR 114: 188 |
Letter no: | DCP-LETT-2040 |
To J. D. Hooker 20 January [1857]
Summary
CD will advise Daniell not to apply for Royal Society grant.
CD’s experiment: fish fed seeds, which germinated when voided.
Author: | Charles Robert Darwin |
Addressee: | Joseph Dalton Hooker |
Date: | 20 Jan [1857] |
Classmark: | DAR 114: 189 |
Letter no: | DCP-LETT-2042 |
To J. D. Hooker 15 March [1857]
Summary
Separation of sexes in trees [U. S.].
Do plants offer positive evidence for "continuous land" theory?
Protean genera.
Author: | Charles Robert Darwin |
Addressee: | Joseph Dalton Hooker |
Date: | 15 Mar [1857] |
Classmark: | DAR 114: 193 |
Letter no: | DCP-LETT-2066 |
To J. D. Hooker [21 March 1857]
Summary
Ranges of species in large vs small genera: Asa Gray’s compilation fits CD’s expectation.
CD studies seedling mortality in his weed garden.
JDH’s work on Indian flora.
Author: | Charles Robert Darwin |
Addressee: | Joseph Dalton Hooker |
Date: | [21 Mar 1857] |
Classmark: | DAR 114: 192a |
Letter no: | DCP-LETT-2067 |
To J. D. Hooker 8 April [1857]
Summary
Independence of variation from climate shown by several plant genera; CD asks for confirmation.
Progressing with book [Natural selection].
Author: | Charles Robert Darwin |
Addressee: | Joseph Dalton Hooker |
Date: | 8 Apr [1857] |
Classmark: | DAR 114: 191 |
Letter no: | DCP-LETT-2073 |
To J. D. Hooker 12 April [1857]
Summary
Thanks JDH for response on variation. Studying variations that seem correlated with environment, e.g., north vs south, ascending mountains.
CD’s weed garden: observations on slugs killing seedlings.
Seed-salting. One-seventh of the plants of any country could be transported 924 miles by sea and would germinate.
Author: | Charles Robert Darwin |
Addressee: | Joseph Dalton Hooker |
Date: | 12 Apr [1857] |
Classmark: | DAR 114: 192 |
Letter no: | DCP-LETT-2075 |
To J. D. Hooker [29 April 1857]
Summary
Curative power of hydropathy.
General hairiness of alpine plants questioned: direct environmental effect.
CD has long felt JDH is too hard on bad observers.
Author: | Charles Robert Darwin |
Addressee: | Joseph Dalton Hooker |
Date: | [29 Apr 1857] |
Classmark: | DAR 114: 194 |
Letter no: | DCP-LETT-2084 |
To J. D. Hooker [2 May 1857]
Summary
JDH has shaved the hair off the alpine plant.
CD apologises for his criticism.
Apparent but false relations of plant structure to climate: heath-like foliage of all Cape of Good Hope plants.
Author: | Charles Robert Darwin |
Addressee: | Joseph Dalton Hooker |
Date: | [2 May 1857] |
Classmark: | DAR 114: 195 |
Letter no: | DCP-LETT-2087 |
To J. D. Hooker [3 May 1857]
Summary
JDH’s last letter demolishes woolly alpine plant theory.
Correlation of apetalous flowers and cold climate.
Author: | Charles Robert Darwin |
Addressee: | Joseph Dalton Hooker |
Date: | [3 May 1857] |
Classmark: | DAR 114: 196 |
Letter no: | DCP-LETT-2088 |
To J. D. Hooker 16 [May 1857]
Summary
Asks JDH’s opinion, and botanical evidence, on important law: parts that are highly developed in comparison to other allied species are very variable.
Interest in hairiness of alpine plants revived by reading A. Moquin-Tandon [Éléments de tératologie végétale (1841)]; correlation with dryness. CD seeks interpretation independent of direct environmental effect.
Author: | Charles Robert Darwin |
Addressee: | Joseph Dalton Hooker |
Date: | 16 [May 1857] |
Classmark: | DAR 114: 197 |
Letter no: | DCP-LETT-2092 |
To J. D. Hooker 2 June [1857]
Summary
Qualifications of John Lindley, Huxley, Albany Hancock, Joseph Prestwich, J. C. Ross, and Francis Beaufort for Royal Medal.
Author: | Charles Robert Darwin |
Addressee: | Joseph Dalton Hooker |
Date: | 2 June [1857] |
Classmark: | DAR 114: 199 |
Letter no: | DCP-LETT-2099 |
To J. D. Hooker 3 June [1857]
Summary
"Law" [see 2092] correlating variability and abnormal development not confirmed by JDH for plants.
CD studies struggle for existence in his weed garden.
Scotch fir observed at Moor Park.
Author: | Charles Robert Darwin |
Addressee: | Joseph Dalton Hooker |
Date: | 3 June [1857] |
Classmark: | DAR 114: 200 |
Letter no: | DCP-LETT-2101 |
To J. D. Hooker 5 June [1857]
Summary
Royal Society medals.
Correlation of variability and abnormal development is G. R. Waterhouse’s law. Relation of this law to polymorphism.
Colouring and marks of ancestral horse deduced from facts observed in pigeons.
Author: | Charles Robert Darwin |
Addressee: | Joseph Dalton Hooker |
Date: | 5 June [1857] |
Classmark: | DAR 114: 201 |
Letter no: | DCP-LETT-2102 |
To J. D. Hooker 25 June [1857]
Summary
Seedling leaves of gorse look like clover leaves. This is like young lions being striped. Thus, laws of animal embryology apply to plants.
Author: | Charles Robert Darwin |
Addressee: | Joseph Dalton Hooker |
Date: | 25 June [1857] |
Classmark: | DAR 114: 205 |
Letter no: | DCP-LETT-2112 |
To J. D. Hooker 1 July [1857]
Summary
George Henslow’s curtness to JDH: "an attack of religion".
Embryonic leaves. Adaptive functions and taxonomic significance of cotyledons.
Asa Gray. Separation of sexes in U. S. trees.
Author: | Charles Robert Darwin |
Addressee: | Joseph Dalton Hooker |
Date: | 1 July [1857] |
Classmark: | DAR 114: 198 |
Letter no: | DCP-LETT-2116 |
To J. D. Hooker 5 July [1857]
Summary
Does JDH’s Wahlenbergia confirm CD’s law? Variations of one species assume the character of a distinct but allied species or genus.
Seed-salting: old ones float and germinate.
Owen’s "grand paper" [? J. Proc. Linn. Soc. Lond. (Zool.) 2 (1858): 1–37].
Author: | Charles Robert Darwin |
Addressee: | Joseph Dalton Hooker |
Date: | 5 July [1857] |
Classmark: | DAR 114: 203 |
Letter no: | DCP-LETT-2117 |
To J. D. Hooker 14 July [1857]
Summary
Asks to borrow several Floras. Must redo calculations as John Lubbock has shown him an important error.
Author: | Charles Robert Darwin |
Addressee: | Joseph Dalton Hooker |
Date: | 14 July [1857] |
Classmark: | DAR 114: 204 |
Letter no: | DCP-LETT-2124 |
To J. D. Hooker 1 August [1857]
Summary
Important issue at stake with new flora calculations: evidence that species are only strongly marked varieties. Planning large-scale survey.
Author: | Charles Robert Darwin |
Addressee: | Joseph Dalton Hooker |
Date: | 1 Aug [1857] |
Classmark: | DAR 114: 206, 207 |
Letter no: | DCP-LETT-2130 |
To J. D. Hooker 22 August [1857]
Summary
Tabulation of varieties goes on; very important as it shows the branching of forms. Mentions his principle of divergence.
Author: | Charles Robert Darwin |
Addressee: | Joseph Dalton Hooker |
Date: | 22 Aug [1857] |
Classmark: | DAR 114: 208 |
Letter no: | DCP-LETT-2134 |