From:
Lucy Caroline Wedgwood; Lucy Caroline Harrison
To:
Charles Robert Darwin
Date:
20 Jan [1872]
Source of text:
DAR 94: 1b
Summary:
Gives results of probing worm-holes with wire.
Contributor:
Darwin Correspondence Project
Showing 1–4 of 4 items
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.