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From Henry Walter Bates   18 March 1861


Sends his paper ["Insect fauna of the Amazon valley", Trans. R. Entomol. Soc. Lond. 2d ser. 5 (1861): 223–8, 335–61].

Points out three areas of interest arising from the study of the species of Papilio: the derivation of the fauna, the variability of the species, and the permanence of local varieties.

Discusses J. S. Baly’s views on specific differences in reproductive organs [Catalogue of the Hispidae in the collection of the British Museum (1858)].

Author:  Henry Walter Bates
Addressee:  Charles Robert Darwin
Date:  18 Mar 1861
Classmark:  DAR 160.1: 61
Letter no:  DCP-LETT-3092

To H. W. Bates   26 March [1861]


Comments on the great extent of variations and on the acknowledgment of the new idea of greater female variety.

Expresses belief that the glacial period did affect the tropics, though HWB’s arguments have confounded him.

Poses a series of questions concerning sexual selection.

Author:  Charles Robert Darwin
Addressee:  Henry Walter Bates
Date:  26 Mar [1861]
Classmark:  Cleveland Health Sciences Library (Robert M. Stecher collection)
Letter no:  DCP-LETT-3100

From H. W. Bates   28 March 1861


Discusses specific varieties, especially geographic varieties.

Comments on the effects of the glacial age on the tropics.

Sexual selection.

Author:  Henry Walter Bates
Addressee:  Charles Robert Darwin
Date:  28 Mar 1861
Classmark:  DAR 160.1: 62
Letter no:  DCP-LETT-3104
Document type
letter (3)
18 (1)
26 (1)
28 (1)