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To R. H. Blair   [before 16 March 1871]

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Thanks RHB for information on expression in the blind.

Sends queries on expression and asks whether he could answer them with respect to those born blind.

Author:  Charles Robert Darwin
Addressee:  Robert Hugh Blair
Date:  [before 16 Mar 1871]
Classmark:  DAR 96: 100
Letter no:  DCP-LETT-7588

From R. H. Blair   16 March 1871

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Will be pleased to collect information on the blind for CD when time allows. Generally very few (about one quarter) of blind people entering institutions are born blind.

Author:  Robert Hugh Blair
Addressee:  Charles Robert Darwin
Date:  16 Mar 1871
Classmark:  DAR 160: 195
Letter no:  DCP-LETT-7590

From R. H. Blair   11 July 1871

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Summary

Reports observations on expression in the blind; facial contortions and blushing.

Author:  Robert Hugh Blair
Addressee:  Charles Robert Darwin
Date:  11 July 1871
Classmark:  DAR 160: 196
Letter no:  DCP-LETT-7857

From R. H. Blair   9 November 1872

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Thanks for copy [of Expression].

Has now read Charles Bell’s book [Anatomy and philosophy of expression, 3d ed. (1844)].

Reports instance of person, blind from birth, frowning, when supposedly the blind cannot control the muscle required.

Author:  Robert Hugh Blair
Addressee:  Charles Robert Darwin
Date:  9 Nov 1872
Classmark:  DAR 160: 197
Letter no:  DCP-LETT-8615
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Correspondent
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1871 (3)
1872 (1)