RECORD: Darwin, C. R. & Francis Darwin. 1874.07.11. Drosera – Bone. CUL-DAR57.120. Edited by John van Wyhe (Darwin Online, http://darwin-online.org.uk/)

REVISION HISTORY: Transcribed by Christine Chua and edited by John van Wyhe 1.2023. RN1

NOTE: See record in the Darwin Online manuscript catalogue, enter its Identifier here. Reproduced with permission of the Syndics of Cambridge University Library and William Huxley Darwin. The volumes CUL-DAR 54-61 contain material for Darwin's book Insectivorous plants (1875).


[120]

July 11. 74 —

Drosera— Bone

In the little undigested bit in the middle the spider-like spaces can be seen. The halo halo of digested part round it is almost transparent and only shows very fine striation fibrillation in various directions. The little bit in the middle is much more opaque; where it fades into the transparent part it appears frayed out from opaque fibres projecting beyond the edge & dying away into the transparent fibrilln.

This refers to bone decalcified by Hydrochloric Acid — when the transparent masses off 2 leaves (with no saliva) was scraped off & placed under compound. Here & there little bit of the fibrous basis remained undigested or rather undissolved, & out line not rounded ↘

[120v]

Frank says fibrous basis of nature of gelatine & action certainly closely similar.—


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Citation: John van Wyhe, ed. 2002-. The Complete Work of Charles Darwin Online. (http://darwin-online.org.uk/)

File last updated 18 May, 2023