To Francis Darwin 4 July [1879]1
Down.—
July 4th
My dear F.
It will be very important for us to learn whether it is the tips of radicles that perceive & cause them to bend to damp surfaces, so learn if you can how Sachs tried Beans.— I know that you tried mustard(?) but I forget result— in fact my Brain is in complete addle about what we have tried.2 I think when you are at home we ought to try one other Graminous plant. viz Wheat—. about radicle bending up from surface of water (as Cieleski says Maize does) keeping radicle in very damp air.—3
I was talking yesterday with Ubba about your return, but could not make him understand that it wd. be many days before you returned. He maintained that you wd. come before Aunt Etty. He said “it is likely he will bring me some soldiers”— so a word to the wise.— I said that I shd be very glad when poor Dada came back. This he seemed to think very odd & asked me many times “what for?” His little head is as full of soldiers, dums & tumpets as ever it can be stuffed.—4
Your affect. C. D.
Footnotes
Bibliography
Ciesielski, Theophil. 1872. Untersuchungen über die Abwärtskrümmung der Wurzel. Beiträge zur Biologie der Pflanzen 1 (1870–5) Heft 2: 1–30.
Sachs, Julius. 1873–4. Ueber das Wachsthum der Haupt- und Nebenwurzeln. Arbeiten des Botanischen Instituts in Würzburg 1 (1871–4): 385–474, 584–634.
Summary
CD gives suggestions concerning FD’s experiments on the radicles of roots. Asks him to find out whether J. von Sachs tried beans. Should also try other gramineous plants.
Bernard looking forward to his father’s return.
Letter details
- Letter no.
- DCP-LETT-12134A
- From
- Charles Robert Darwin
- To
- Francis Darwin
- Sent from
- Down
- Source of text
- DAR 271.4: 16
- Physical description
- ALS 2pp †
Please cite as
Darwin Correspondence Project, “Letter no. 12134A,” accessed on 26 September 2022, https://www.darwinproject.ac.uk/letter/?docId=letters/DCP-LETT-12134A.xml