To Charles William Crocker 18 May [1861]
Summary
Describes results of his experiments with hollyhocks. Some varieties breed true even though growing near others. This suggests that their pollen is "pre-potent" over that of other varieties, which is not the case with most plants. Asks some questions on which he would be glad to have correspondent work. [See also 3170.]
Author: | Charles Robert Darwin |
Addressee: | Charles William Crocker |
Date: | 18 May [1861] |
Classmark: | Cleveland Health Sciences Library (Robert M. Stecher collection) |
Letter no: | DCP-LETT-3151 |
To C. W. Crocker 1 June [1861]
Summary
Suggests procedures for breeding experiments with hollyhocks. Recommends C. F. v. Gärtner [Bastarderzeugung (1849)]. [See also 3151]
Author: | Charles Robert Darwin |
Addressee: | Charles William Crocker |
Date: | 1 June [1861] |
Classmark: | American Philosophical Society (Mss.B.D25.251) |
Letter no: | DCP-LETT-3170 |
To Charles William Crocker 31 January [1864]
Summary
Reminds CWC that he offered to give information with respect to his observations on hollyhocks. Wishes he could persuade CWC to undertake experiments on the fertility of some crosses between the most distinct varieties.
Author: | Charles Robert Darwin |
Addressee: | Charles William Crocker |
Date: | 31 Jan [1864] |
Classmark: | Cleveland Health Sciences Library (Robert M. Stecher collection) |
Letter no: | DCP-LETT-3425 |