Search: letter in document-type 
Darwin, C. R. in addressee 
1860-1869::1861::10 in date 
Sorted by:

Showing 16 of 6 items

From:
Daniel Oliver
To:
Charles Robert Darwin
Date:
[after 8 Oct 1861]
Source of text:
DAR 261.10: 31
Summary:

Finds no trace of nectar in Stanhopea saccata.

Contributor:
Darwin Correspondence Project
From:
Thomas White Woodbury
To:
Charles Robert Darwin
Date:
[9–22 Oct 1861]
Source of text:
Pinned to CD’s unbound copy of Journal of Horticulture , 8 October 1861, p. 38 (Darwin Library–CUL)
Summary:

Fancies articles on "The queen bee" and "Drone influence" [J. Hortic. 8 October 1861, p. 39] may be of interest. Since writing the latter, one of his drones hybridised a queen at a distance of a mile and a half.

Contributor:
Darwin Correspondence Project
From:
Asa Gray
To:
Charles Robert Darwin
Date:
11 Oct 1861
Source of text:
DAR 109: 82–3, DAR 110 (ser. 2): 117, DAR 111: 83
Summary:

Notes several cases of "dioecio-dimorphism" in different genera; feels the discovery of pollen that will act only on the pistil of another flower is most important. Believes CD should next turn his attention to investigating cases of "precocious fertilisation".

Contributor:
Darwin Correspondence Project
From:
Henry Wenman Newman
To:
Charles Robert Darwin
Date:
[before 22 Oct 1861]
Source of text:
Journal of Horticulture, Cottage Gardener, and Country Gentleman n.s. 2 (1861–2): 76–7.
Summary:

Replies to CD’s query (see 3778): the queens or females of the humble bees are not fertilised in the air. Offers a number of observations relating to the fertilisation of bees and wasps, which he has made in the course of sixty years.

Contributor:
Darwin Correspondence Project
From:
Charles Lyell, 1st baronet
To:
Charles Robert Darwin
Date:
22 Oct 1861
Source of text:
Natural History Museum, Library and Archives (General Special Collections DC AL 7/1)
Summary:

Ice could not have formed the blockages in Lochaber unless in every case the water escaped over some col into a contiguous valley on the same watershed, or into the eastern watershed. Supposes that the cols were not land-straits, but the places where the lakes were drained when forced to flow the wrong way.

Contributor:
Darwin Correspondence Project
From:
Thomas Francis Jamieson
To:
Charles Robert Darwin
Date:
24 Oct 1861
Source of text:
The University of Edinburgh Centre for Research Collections (Gen.112/2828-9)
Summary:

Discusses his observations at Glen Roy. Mentions glaciers seen by Hooker in the Himalayas. Discusses problems of glacier–lake theory.

Contributor:
Darwin Correspondence Project