Search: Darwin, C. R. in author 
1860-1869::1868::03::30 in date 
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From:
Charles Robert Darwin
To:
Ernst Philipp August (Ernst) Haeckel
Date:
30 Mar [1868]
Source of text:
Ernst-Haeckel-Haus (Bestand A-Abt. 1: 1–52/17)
Summary:

Now understands importance of swim-bladder in selachians. Always imagined animal like Lepidosiren was parent form of vertebrates.

Has been nearly a month in London, collecting facts on sexual selection from breeders and at Zoological Gardens.

Astonished at hybrid of rabbit and hare. Is it certain that work was done with hare?

Contributor:
Darwin Correspondence Project
From:
Charles Robert Darwin
To:
William Bowman, 1st baronet
Date:
30 Mar [1868]
Source of text:
Doris Harris Autographs (dealer) (no date)
Summary:

Clarifies his earlier query on Bell’s observations. Seeks confirmation of Bell’s statement that the conjunctiva of a child whose eyes are opened forcibly during a screaming fit become engorged with blood. CD has noted a relationship between contraction of the orbicular muscle and secretion of tears; can WB explain why they appear related?

Contributor:
Darwin Correspondence Project