To G. H. Darwin 10 [July 1878]1
Down, | Beckenham, Kent. | Railway Station | Orpington. S.E.R.
10th
My dear George
I am so much interested in the Thalia, that I shd. be very glad of sketch of pistil, just beginning to curve & & another sketch of pistil naturally wound up into spire.—2 I know it is a shame to ask you, as you are working on such much more important subjects.—
The specs are in spirits & water & will keep for a few days. It will be impossible for you to do it, unless you can borrow microscope with very weak simple lens. I send diagram of the more interesting specimen, which was almost killed with Prussic acid, so that pistil would move a little from the enfolding petal when I dissected away all the petal except the enfolding one.—3 I cannot yet make out positively what keeps it in place. The 2 transverse nectaries are important; & so is a little white fold at base of lower nectary. The Pistil rises from middle of Ovarium—base of petal of course on one side.— The rectangularly bent summit of pistil, which is seen obliquely in the position shown in diagram, is very complex— If you can, you may afterwards cut it off & draw it from above or any other position.—
On summit there is white knob (in front of concavity in which the pollen is lodged) which I believe is the stigma, with a second stigma in the deep cavity below.—
The second spec. shows pistil & enfolding petal after it had exploded from a touch to tip of nectary with pistil wound into a spire.— Whether you will succeed is a mere chance; but you will fail without microscope
Yours affectly | C. Darwin
Footnotes
Bibliography
Movement in plants: The power of movement in plants. By Charles Darwin. Assisted by Francis Darwin. London: John Murray. 1880.
Summary
Asks for sketches of [Thalia] pistil, in which he is much interested.
Letter details
- Letter no.
- DCP-LETT-11597
- From
- Charles Robert Darwin
- To
- George Howard Darwin
- Sent from
- Down
- Source of text
- DAR 210.1: 69
- Physical description
- ALS 4pp
Please cite as
Darwin Correspondence Project, “Letter no. 11597,” accessed on 26 September 2022, https://www.darwinproject.ac.uk/letter/?docId=letters/DCP-LETT-11597.xml