RECORD: Darwin, C. R. & Francis. 1878.07.31-.08.04. Pinus pinaster / Draft of Cross and self fertilisation. CUL-DAR209.3.275-276. Edited by John van Wyhe (Darwin Online, http://darwin-online.org.uk/)

REVISION HISTORY: Transcribed by Christine Chua and edited by John van Wyhe 12.2022. 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 volume CUL-DAR209.3 contains materials on Circumnutation of leaves and hyponasty for Darwin's book Movement in plants (1880). The text of the draft corresponds to Cross and self fertilisation, pp. 426-8.


[275]

Pinus Pinaster July 31

[data not transcribed]

[275v]

[The excised right side of this page is at CUL-DAR.209.3.272.]

through the corolla; but in

anner although they could

obtain the nectar in a in a legit=

to corolla.)

ck)

methos of operating, on flowers

es from the outside close to

idden within the corolla.

of Stachys coccinea had

upper side of the corolla near the base.

rabilis & of Salvia coccinea

manner; whist with those

lyx which is much elongated in had

rolla were both invariably

Pentstemon cornutus is argutus are

st named, and two holes

ave always bored through been made in them

[276]

Pinus Pinaster Aug 3d

[data not transcribed]

Used

[276v]

734 (20

Ch XI

through a lens. This process was repeated many times; but I did not succeed in finding a single flower, though many hundreds were examined, which had not been perforated. Humble-bees were at the time sucking the flowers through these perforations. On the following day a large number of flowers were examined on the another heath with the same result, but here hive-bees were sucking through the holes. which probably had been made by humble bees. This case is all the more remarkable, as the innumerable


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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 August, 2023