From H. C. Watson 5 June 1856
Summary
Answers CD’s questions about plants common to U. S. and Britain and their distribution in Europe.
Variability of agrarian weeds.
Author: | Hewett Cottrell Watson |
Addressee: | Charles Robert Darwin |
Date: | 5 June 1856 |
Classmark: | DAR 181: 32 |
Letter no: | DCP-LETT-1891 |
From H. C. Watson 10 June 1856
Summary
Evidence relevant to E. Forbes’s land-bridge theory.
Author: | Hewett Cottrell Watson |
Addressee: | Charles Robert Darwin |
Date: | 10 June 1856 |
Classmark: | DAR 181: 33 |
Letter no: | DCP-LETT-1898 |
From H. C. Watson 20 June 1856
Summary
Conveys [? J. T. I. Boswell-]Syme’s opinion of variability of agrarian weeds and ranges of species common to U. S. and W. Europe. The Hispano-Hibernian connection.
Author: | Hewett Cottrell Watson |
Addressee: | Charles Robert Darwin |
Date: | 20 June 1856 |
Classmark: | DAR 181: 34 |
Letter no: | DCP-LETT-1907 |
To H. C. Watson [after 10 June 1856]
Summary
Do the plants that are common to Europe and North America nearly all live north of the Arctic Circle? CD bases his question on HCW’s "capital" comparison between relations of Europe to North America and Europe to E. Asia if the intervening land had been submerged. CD has been led to speculate that in the mid-Pliocene the organisms now living in middle Europe and northern U. S. lived within the Arctic Circle. Subsequent movements of this flora with advance and retreat of glaciers would explain present distribution better than Forbes’s vast submergences.
Author: | Charles Robert Darwin |
Addressee: | Hewett Cottrell Watson |
Date: | [after 10 June 1856] |
Classmark: | DAR 185: 52 |
Letter no: | DCP-LETT-1899 |
Watson, H. C. | (3) |
Darwin, C. R. | (1) |
Darwin, C. R. | (3) |
Watson, H. C. | (1) |