To J. D. Hooker 10 May 1848
Summary
Confident of species theory as result of applying it to cirripede sexual systems.
CD’s opinion of E. Blyth. JDH should meet Blyth, inquire about domesticated varieties, study insular flora, solve coal-plant problem.
Author: | Charles Robert Darwin |
Addressee: | Joseph Dalton Hooker |
Date: | 10 May 1848 |
Classmark: | DAR 114: 112 |
Letter no: | DCP-LETT-1174 |
To J. D. Hooker 6 October [1848]
Summary
CD makes progress with barnacles. Describes "supplemental" males in detail. In working out metamorphosis, their crustacean homologies followed automatically.
CD opposes appending first describer’s name to specific name.
Author: | Charles Robert Darwin |
Addressee: | Joseph Dalton Hooker |
Date: | 6 Oct [1848] |
Classmark: | DAR 114: 112a |
Letter no: | DCP-LETT-1202 |
From J. D. Hooker 20 February – 16 [March] 1848
Summary
Though correspondence has never ebbed so low, CD is constantly in his thoughts.
Observations on cheetahs used as domesticated hunting animals.
Finds geographical barriers sometimes separate species, but also finds species that remain separate where there are no barriers to migration.
Colour "individuates" isolated animal species.
Plains and alpine animal distribution show altitude not strictly analogous to latitude.
Impact of timber cutting on climate has led to extinction of crocodiles.
Will discuss coal formation in letter to Edward Forbes.
CD often asked whether isolated mountains in southern latitudes had closely allied representatives of Arctic and north temperate plants; JDH has found a representative barberry.
Making for Darjeeling via Calcutta.
Author: | Joseph Dalton Hooker |
Addressee: | Charles Robert Darwin |
Date: | 20 Feb – 16 [Mar] 1848 |
Classmark: | Royal Botanic Gardens, Kew (India letters 1847–51: 52–4 JDH/1/10) |
Letter no: | DCP-LETT-1158 |
From J. D. Hooker 24 July [1848]
Summary
Brian Hodgson reading CD’s Journal of researches with delight.
Forwarding breeding pamphlets.
JDH recommends P. S. Pallas on degeneration.
CD’s facts on sex in barnacles startling.
Hugh Falconer’s health.
Author: | Joseph Dalton Hooker |
Addressee: | Charles Robert Darwin |
Date: | 24 July [1848] |
Classmark: | Royal Botanic Gardens, Kew (India letters 1847–51: 94 JDH/1/10) |
Letter no: | DCP-LETT-1193 |
From J. D. Hooker 13 October 1848
Summary
Hugh Falconer’s misbehaviour.
Waiting out rains at Brian Hodgson’s.
Will make botanical transverse section of Himalayas from plains to snow.
Arrangements to pass Sikkim Rajah’s territory.
No evidence of glacial or diluvial action in sub-Himalayan mountains. No evidence of detrital coal formation.
Hodgson’s replies to CD on introduced species and hybrids.
Author: | Joseph Dalton Hooker |
Addressee: | Charles Robert Darwin |
Date: | 13 Oct 1848 |
Classmark: | Royal Botanic Gardens, Kew (India letters 1847–51: 112–14 JDH/1/10) |
Letter no: | DCP-LETT-1203 |
letter | (5) |
Hooker, J. D. | (3) |
Darwin, C. R. | (2) |
Darwin, C. R. | (3) |
Hooker, J. D. | (2) |