RECORD: Darwin, C. R. [1874].09.19. Utricularia vulgaris. CUL-DAR59.2.82. Edited by John van Wyhe (Darwin Online, http://darwin-online.org.uk/)

REVISION HISTORY: Transcribed by Christine Chua and edited by John van Wyhe 11.2021. 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).


[82]

U. vulgaris

Sep 19

Cut up a thin slice of fresh box wood into little pieces: which sink in water. In putting on one I thought i must have flirted it off the valve but on examining the bladder found it inside. I put * on another bit scraping it off the point of one needle with the other so that i think I certainly exerted no pressure on the valve; it disappeared inside instantaneously & the valve closed again I put another bit of wood on their same valve about 5 minutes afterwards at 11.10 poking it about with my needle & it would not go in – Examined Sep 20 11 AM not in

Sep 19 Put 3 bits on bladders called L, R, & "Rightmort", R 10.30, L 11.25, Rightmort 1230. At 11.30 I was pushing about the R one with decidedly very slight pressure when it disappeared in it was near the free extremely – of valve. Put another bit in the valve R

4º 30'

15 20'

24

1º 30'

22 30'

Sep 20 – 8 AM all 3 on still

11 AM – the bit of wood in "Rightmort" is inside the bladder. The other 2 bits not in

Examined a bladder loaded in 19th at 10.15 – not taller on the 20th at 11

2 other loaded bladders had a middle made about them

2 bits of wood measured 30 & 45 [division] if increase

{no 4 tube out} 40 [divisions] = 1/65 of an inch.

[82v]

8.30 left hand replaced on valve at 11 – not in

10.15

one on the solitary one in wood inside at 11.10 – not in

R. one in long spray about 10.30

(11.25

11.30 pushing about the R one with a little down pressure the valve opened suddenly & in it went. It was near the free extreme of valve. I was pressing certainly only lightly L I knocked off replaced 11.45

Another bit poked about on the valve wouldn't go in.

N. pierced: slightly opaque, like the C pierced one with shrinking at the tips of the quadrifids & brownian movement & small granules.

N. valve slightly but not open – had to cut bristle

 


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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 25 September, 2022