Search: 1850-1859::1855::03::02 in date 
Sorted by:

Showing 13 of 3 items

From:
Sir John Herschel
To:
Unidentified
Date:
[2 March 1855]
Source of text:
TxU:H/L-0717; Reel 1089
Summary:

Extraordinary demand for gold and silver coin in 1852-54 has subsided. Reports disposition of twelve Custom House employees who were assigned to Mint as temporary clerks for this period.

Contributor:
John Herschel Project
From:
Thomas Vernon Wollaston
To:
Charles Robert Darwin
Date:
2 Mar [1855]
Source of text:
DAR 181: 136
Summary:

Hybrid insects.

Description of the Salvages.

Variability of "transition groups" of insects; relation of variability to ranges of insects. The variability of wings, even within species. Reduction of flying ability on isolated islands.

Forbes’s "Atlantis" theory and insect fauna of the Atlantic islands, considered with regard to insect migrations.

Contributor:
Darwin Correspondence Project
From:
George Robert Waterhouse
To:
Charles Robert Darwin
Date:
[after 2 Mar 1855]
Source of text:
DAR 47: 133–4
Summary:

Gives instances of sexual differences in the number of tarsi within species of Coleoptera and also variation in the number of tarsi between related species.

Contributor:
Darwin Correspondence Project
thumbnail