From:
Lucy Caroline Wedgwood; Lucy Caroline Harrison
To:
Charles Robert Darwin
Date:
[15 June 1872?]
Source of text:
DAR 181: 61
Summary:
Worm-casts on a ridged hill.
Contributor:
Darwin Correspondence Project
Showing 1–5 of 5 items
Worm-casts on a ridged hill.
Gives results of probing worm-holes with wire.
Describes earthworm experiments. She has measured depth of mould in various locales, e.g., on ridges and furrows of an old ploughed field.
Asks her to probe worm-holes on grassy slopes with a knitting needle to ascertain whether they come out at right angles to the slope or to the horizon.
Thanks for observations on angles of worm-holes on slopes. William Darwin is observing at Stonehenge. She is worth her weight in gold.