From W. H. Miller 8 March [1845]
8 Park Terrace Cambridge
8 March
My dear Darwin
Pray excuse me for not having sooner given an account of the crystals you sent me—I was busy with lectures and other matters for some time after they came— The cleavage planes are very dull and uneven. I could make nothing of them except by using sun light for the upper signal. The angles usually fell within 15’ of 90o, but different parts of—apparently the same cleavage plane—tho’ in fact cleavage planes of different crystals aggregated together in positions nearly but not quite parallel—differed in position full 15’ not unfrequently. So that I have little doubt of the identity of the crystals with Potash Feldspar1
I regret very much to hear that your health is indifferent. I am well. I have at last been able to escape from College and marry—2 I live in Cambridge where I hope some time to have the pleasure of seeing you
I remain | Dear Darwin | Yours very truly | W H Miller
CD annotations
Footnotes
Bibliography
Alum. Cantab.: Alumni Cantabrigienses. A biographical list of all known students, graduates and holders of office at the University of Cambridge, from the earliest times to 1900. Compiled by John Venn and J. A. Venn. 10 vols. Cambridge: Cambridge University Press. 1922–54.
South America: Geological observations on South America. Being the third part of the geology of the voyage of the Beagle, under the command of Capt. FitzRoy RN, during the years 1832 to 1836. By Charles Darwin. London: Smith, Elder & Co. 1846.
Summary
Discusses cleavage planes of mineralogical specimens.
Letter details
- Letter no.
- DCP-LETT-836
- From
- William Hallowes Miller
- To
- Charles Robert Darwin
- Sent from
- Cambridge
- Source of text
- DAR 39: 42
- Physical description
- ALS 2pp †
Please cite as
Darwin Correspondence Project, “Letter no. 836,” accessed on 20 April 2024, https://www.darwinproject.ac.uk/letter/?docId=letters/DCP-LETT-836.xml
Also published in The Correspondence of Charles Darwin, vol. 3