RECORD: Darwin, C. R. 3-5.05.[1834]. Geological diary: Cabin Barometer / My own / Diff[erence] (calculations). CUL-DAR34.100. Edited by John van Wyhe (Darwin Online, http://darwin-online.org.uk/)
REVISION HISTORY: Transcribed and edited by John van Wyhe 9.2024. RN2
NOTE: See record in the Darwin Online manuscript catalogue, enter its Identifier here. This document, part of the largest scientific document composed by Darwin during the voyage of the Beagle, is written mostly in ink. Marginal notes are here integrated into the text. Watermark not see but clearly "RYE MILL 1830" paper.
Reproduced with the permission of the Syndics of Cambridge University Library and William Huxley Darwin.
See the introduction to the Geological Diary by Gordon Chancellor.
[100]
Cabin Barometer |
My own |
Diff |
40.157 |
30.500 |
— 343 |
—214 |
—556 |
342 |
—176 |
—512 |
336 |
3 .547 |
3 1.522.6 |
|
.182.3 |
.182.3 |
|
Diff + |
.340.3 or |
+ .342.5 |
NB. Last observation no compared at same time & my Barometer fell
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|
T |
t |
|
T |
t |
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May 3d. Sun Set.
|
29.45 |
A 48.5 |
D 985 |
29.280 |
A 41.5 |
D 41 |
Diff C. +200 |
|||
4th. S. R[rise] |
— 65. |
— 47 |
— 39 |
— 507 |
A 40 |
D 40 |
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S S. |
— 824 |
— 50 |
— 48 |
— 713 |
A 45 |
D 42? |
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5th. S. R[rise] |
— 912 |
— 48. |
— 44.5 |
— 813. |
A 44 |
D 44? |
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4 |
2.836 |
193.5 |
180.8 |
2.313 |
170.5 |
167 |
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29 |
.709 |
48.4 |
45 |
29.578 |
42.6 |
41.7 |
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4 |
.342. |
Diff of Barometers |
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30 |
.051 |
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Upper down station D t' = 41.7 t = 45 A T' = 42.6 T – 48.4 Barm. B' = 29.578. B = 30.051 B = 0.00025 Lag. B' = 1.470998 1.471248 Lag B = 1.477844 D = 0.005596
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819281 Lg = 7.747 878 C = 9.999 800 A = 4.791 450 2.539 128 =731. 21610 531
= 407. feet. Taken at bw best difference gives : 337 feet : |
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Measurement of height of river [5 further calculations]
[verso blank]
Citation: John van Wyhe, ed. 2002-. The Complete Work of Charles Darwin Online. (http://darwin-online.org.uk/)
File last updated 22 November, 2024