RECORD: Darwin, C. R. 'Depth of rhomb 18/200 = 9/100' (nd) CUL-DAR48.B11 Transcribed by Kees Rookmaaker (Darwin Online,

REVISION HISTORY: Transcribed by Kees Rookmaaker, corrections and editing against the manuscript by John van Wyhe 7-11.2010. RN1

NOTE: Editorial symbols used in the transcription:
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Reproduced with permission of the Syndics of Cambridge University Library and William Huxley Darwin.


Depth of rhomb 18/200 = 9/100
[anth] num 17/200 = 85/100

[anth] & better number 26 or 27/200 = .13

Erasmus says by calculation .088 say nearly .9/100

(Thickness of side about was about 1/20 = 5/100)

Measurement of Depth of Rhomb

Depth of Basin 10/200 = 5/100 = .05
in spec. nr 8
as near as can be measured

Growing edges of hexagon in quite grey count 4-6 1/2 /200
say 5/200: as prism size edges [are only] 2-3/200

[barq] = .05

Depth of rhomb 18/200... 1/20 = 5/100)] in pencil. This document is written on blue ribbed paper.

[11 verso]

or .302

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Citation: John van Wyhe, editor. 2002-. The Complete Work of Charles Darwin Online. (

File last updated 2 July, 2012