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To John Tyndall   [27 February 1871]

Summary

Thinks JT’s discovery of a glycerine respirator is an interesting practical discovery. CD has been wondering about the hairs in our nostrils, but doubts that JT has explained their function, since there are hardly enough.

Will ask W. Ogle to observe hairs in nostrils of different races.

Author:  Charles Robert Darwin
Addressee:  John Tyndall
Date:  [27 Feb 1871]
Classmark:  DAR 261.8: 7 (EH 88205945)
Letter no:  DCP-LETT-7518

To John Tyndall   1 March [1871]

Summary

Ogle will keep JT’s suggestion in mind in observing less hairy races of man and the lower animals.

Asks JT whether he can help Ogle on a troublesome point on the colour of tissues with olfactory nerves, and the relation of colour to the absorption of odours. Does JT’s respirator deprive odorous substances of their smell?

Author:  Charles Robert Darwin
Addressee:  John Tyndall
Date:  1 Mar [1871]
Classmark:  DAR 261.8: 8 (EH 88205946)
Letter no:  DCP-LETT-7524

To John Tyndall   1 March [1871]

Summary

Ogle is unacquainted with JT; would be proud and pleased to call on him. CD likes what little he has seen of him.

Author:  Charles Robert Darwin
Addressee:  John Tyndall
Date:  1 Mar [1871]
Classmark:  DAR 261.8: 9 (EH 88205947)
Letter no:  DCP-LETT-7525

To John Tyndall   7 March [1871]

Summary

Ogle wants very much to meet JT.

Author:  Charles Robert Darwin
Addressee:  John Tyndall
Date:  7 Mar [1871]
Classmark:  DAR 261.8: 10 (EH 88205948)
Letter no:  DCP-LETT-7552

To John Tyndall   8 March [1871]

Summary

Thanks JT for his kindness to Ogle.

Author:  Charles Robert Darwin
Addressee:  John Tyndall
Date:  8 Mar [1871]
Classmark:  DAR 261.8: 11 (EH 88205949)
Letter no:  DCP-LETT-7554
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letter (5)
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Tyndall, Johndisabled_by_default
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