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 |
From J. D. Hooker [11 April 1857]
Summary
JDH cites W. H. Harvey’s observations on Fucus and David Don’s on Juncus as examples of variations that are independent of climate. There are many such cases. Gives his working scheme for categorising variation.
| Author: | Joseph Dalton Hooker |
| Addressee: | Charles Robert Darwin |
| Date: | [11 Apr 1857] |
| Classmark: | DAR 104: 198–201 |
| Letter no: | DCP-LETT-2074 |
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 |
| letter | (4) |
| Darwin, C. R. | (3) |
| Hooker, J. D. | (1) |
| Hooker, J. D. | (3) |
| Darwin, C. R. | (1) |
| Darwin, C. R. | (4) |
| Hooker, J. D. | (4) |
