From Lawson Tait 6 November [1875]1
7, Great Charles St. | Birmingham.
Novr. 6
My Dear Sir,
I have made a very curious discovery within the last few days. My “Droserin” is a compound substance containing the digestive principle which I propose to designate by that name and another substance so deliquescent that it cannot be kept in a dry condition and has the peculiar property, like glycerine, of wandering about & wetting everything2 It is the substance which kills the flies by enabling the water to enter their tracheae.
Plain water does not wet flies. They swim for days on its surface. But water containing this substance wets & kills flies in a few minutes.
What shall I call it? I wish your name would allow its being ‘coined’ into “Darwinin”
I have polished up my greek to get a term descriptive of its peculiar properties, but I am at a loss
I have no doubt your son Francis3 is a good Grecian & can help me.
This substance also accounts for the never-drying nature of the secretion
Yours ever | Lawson Tait
Footnotes
Summary
Composition of "Droserin" [see 10015].
Letter details
- Letter no.
- DCP-LETT-10244
- From
- Robert Lawson (Lawson) Tait
- To
- Charles Robert Darwin
- Sent from
- Birmingham
- Source of text
- DAR 178: 21
- Physical description
- ALS 4pp
Please cite as
Darwin Correspondence Project, “Letter no. 10244,” accessed on 19 April 2024, https://www.darwinproject.ac.uk/letter/?docId=letters/DCP-LETT-10244.xml
Also published in The Correspondence of Charles Darwin, vol. 23