Search: letter in document-type 
1870-1879::1871 in date 
Darwin, C. R. in correspondent 
Tyndall, John in correspondent 
Darwin, C. R. in addressee 
Sorted by:

Showing 1–3 of 3 items

DCP-LETT-7508

From:
John Tyndall
To:
Charles Robert Darwin
Date:
23 Feb [1871]
Source of text:
DAR 106: C5–6
Summary:

Has devised a respirator for firemen by moistening cotton wool with glycerine and adding charcoal. JT suggests the nose with its hairs and mucus is a respirator that would give protection against diseases caused by floating particles. The presence of hair and mucus is thus explained by CD’s theory.

Contributor:
Darwin Correspondence Project
thumbnail

DCP-LETT-7527

From:
John Tyndall
To:
Charles Robert Darwin
Date:
1 Mar [1871]
Source of text:
DAR 106: C7
Summary:

JT suggests that Ogle call upon him so that they can arrange experiments suitable for his purpose.

Contributor:
Darwin Correspondence Project
thumbnail

DCP-LETT-7556

From:
John Tyndall
To:
Charles Robert Darwin
Date:
8 Mar [1871]
Source of text:
DAR 106: C8
Summary:

Has seen Ogle. His subject [olfactory nerve tissue and absorption of odours] has often occupied JT’s attention.

Contributor:
Darwin Correspondence Project
thumbnail
Author
Addressee
Correspondent
Date
Document type
Repository
Contributor
Transcription available