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To C. H. Blackley   9 March 1877

Summary

Thanks for CHB’s essay [New observations on hay-fever (1877?)]. The calculation of the weight of pollen-grains is wonderful. Suggests he consult Cross and self-fertilisation, pp. 376, 405 for information on this subject.

Author:  Charles Robert Darwin
Addressee:  Charles Harrison Blackley
Date:  9 Mar 1877
Classmark:  Yale University Medical Historical Library, Harvey Cushing / John Hay Whitney Medical Library (MMS)
Letter no:  DCP-LETT-10886

From C. H. Blackley   18 June 1877

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Summary

Asks if phosphoric acid could have killed Drosera he received in a matchbox.

Author:  Charles Harrison Blackley
Addressee:  Charles Robert Darwin
Date:  18 June 1877
Classmark:  DAR 86: B12–13
Letter no:  DCP-LETT-11007

From C. H. Blackley   13 January 1879

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Summary

Relates anecdote about a provincial girl’s reaction to being told men descended from monkeys.

Author:  Charles Harrison Blackley
Addressee:  Charles Robert Darwin
Date:  13 Jan 1879
Classmark:  DAR 160: 194
Letter no:  DCP-LETT-11826

To C. H. Blackley   14 January 1879

Summary

Thanks CHB for his anecdote about a provincial girl’s reaction to being told men descended from monkeys.

Author:  Charles Robert Darwin
Addressee:  Charles Harrison Blackley
Date:  14 Jan 1879
Classmark:  Formerly in the private collection of Dr T. B. Robinson
Letter no:  DCP-LETT-11826F

To C. H. Blackley   14 June [1873]

Summary

Thanks for sending Experimental researches. He will read it as soon as he finishes a book in hand. [See 8965.]

Author:  Charles Robert Darwin
Addressee:  Charles Harrison Blackley
Date:  14 June [1873]
Classmark:  Arbor 441–2 (September–October 1982): 148
Letter no:  DCP-LETT-8943A

To C. H. Blackley   5 July [1873]

Summary

Comments on CHB’s book [Experimental researches on catarrhus aestivus – hay-fever or hay-asthma (1873)].

Explains that some pollens are wind-blown while others depend on insects for dispersal. Effect of pollen on skin and mucous membrane astonishing. Sends a book [M. Wyman, Autumnal catarrh (1872)].

Author:  Charles Robert Darwin
Addressee:  Charles Harrison Blackley
Date:  5 July [1873]
Classmark:  John Hay Library, Brown University (Albert E. Lownes Manuscript Collection, Ms.84.2)
Letter no:  DCP-LETT-8965

From C. H. Blackley   7 July 1873

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Summary

Thanks for copy of Wyman’s book.

His own recent researches [on pollen] at high altitudes were inspired by CD’s account in Journal of researches of distances dust may travel.

Author:  Charles Harrison Blackley
Addressee:  Charles Robert Darwin
Date:  7 July 1873
Classmark:  DAR 160: 192
Letter no:  DCP-LETT-8967

From C. H. Blackley   11 July 1873

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Summary

Thanks for suggestion to try effect of dry heat on pollen and for other new information on pollen. Will begin new experiments soon, hoping to cure hay-fever.

Author:  Charles Harrison Blackley
Addressee:  Charles Robert Darwin
Date:  11 July 1873
Classmark:  DAR 160: 193
Letter no:  DCP-LETT-8974
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letter (8)
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1873 (4)
1877 (2)
1879 (2)
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