To P. L. Sclater 4 February [1860]
Summary
Thanks PLS for list of Galapagos birds.
Mentions note he will add to Journal [of researches (1860)]
and correction he will make in Origin [3d ed. (1861)].
Asks PLS about variability in "abnormal parts of birds".
| Author: | Charles Robert Darwin |
| Addressee: | Philip Lutley Sclater |
| Date: | 4 Feb [1860] |
| Classmark: | American Philosophical Society (Mss.B.D25.195) |
| Letter no: | DCP-LETT-2684 |
To Charles Lyell 23 February [1860]
Summary
Gradation in the eye.
Hooker intends to reply [to W. H. Harvey’s article in Gard. Chron. (1860): 145–6].
Discusses Aspicarpa with respect to correlation.
Comments on monstrous animals.
Discusses objections of Bronn and Asa Gray to natural selection. Cites parallel between natural selection and Newton’s concept of gravitation.
Mentions German experiments on spontaneous generation.
| Author: | Charles Robert Darwin |
| Addressee: | Charles Lyell, 1st baronet |
| Date: | 23 Feb [1860] |
| Classmark: | American Philosophical Society (Mss.B.D25.200) |
| Letter no: | DCP-LETT-2707 |
Document type
| letter | (2) |
Author
| Darwin, C. R. | (2) |
Addressee
| Lyell, Charles | (1) |
| Sclater, P. L. | (1) |
Correspondent
| Darwin, C. R. | (2) |
| Lyell, Charles | (1) |
| Sclater, P. L. | (1) |
