RECORD: Darwin, C. R. n.d. 'R. Wedgwood cd detect or hear of no evidence furrowed land changing'. CUL-DAR63.92. Edited by John van Wyhe (Darwin Online, http://darwin-online.org.uk/)
REVISION HISTORY: Transcribed by Christine Chua and edited by John van Wyhe 6.2021. RN1
NOTE: See record in the Darwin Online manuscript catalogue, enter its Identifier here. Reproduced with permission of the Syndics of Cambridge University Library and William Huxley Darwin.
1
R. Wedgwood cd detect or hear of no evidence furrowed land changing. – believed to be very ancient
Letters from 2 farmers that no difference in distinctness of furrow in upper & lower part of slopes - & a strong belief that the crown & furrows last for generations.
N. Wales – field ploughed 50 or 60 years ago; in furrows at top of slope mould 2 1/2 & at bottom 4 1/2 – furrows moderately inclined for [allowing] 1/2 inch more on ridges than in furrow Many tried of the latter point.
In a field ploughed about 65 years before with furrows running down slope – furrows at top 4 1/2 inches deep & at the bottom when they have nearly disappeared only 1 inch.
The slope of the field was 15° facing N. E – furrows 7 ft apart. The depth of furrow or level grow above the slope 4 to 3 1/2 deep. On another slope 80 years ago of 15° facing S. W. furrows scarcely perceptible at base but on level ground
2
at base same furrows 3 1/4 & 2 1/2 deep – On another short slope of 10°, furrows at top 3 1/2, at the bottom 1 1/4 to 1 1/2 deep)
(Leith Hill field not ploughed for at least 24 years.
Slope moderate
Depth of furrow at LH before much slope |
Depth of middle of slope |
Length of bottom of slope |
Furrow 1 |
4 |
3 3/4 |
3 1/4 |
|
3 8/11 near flat/ |
3 3/4 |
4 |
2 |
*4 – near top |
|
|
|
top 3 1/2 |
0 |
3 |
3 |
near top 3 |
|
|
|
top 4 |
|
|
|
top of slope 3 |
0 |
3 |
4 |
14° |
|
13 1/4 less deep at bottom |
So furrow 3/4 inch shallower at bottom
Depth of mould on ridge 2 3/4 to 4 inch
a furrow 3 1/2 to 5 inches
Citation: John van Wyhe, ed. 2002-. The Complete Work of Charles Darwin Online. (http://darwin-online.org.uk/)
File last updated 25 September, 2022