RECORD: Darwin, C. R. 1880.04.17. Peas radicle with card on tips & above. CUL-DAR209.5.153. (John van Wyhe ed., 2002-. The Complete Work of Charles Darwin Online, http://darwin-online.org.uk/)

REVISION HISTORY: Prepared and edited by John van Wyhe. 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-DAR209.5 contains materials for Darwin's book Movement in plants (1880).


153

C D

Ap. 17. /80/

7° 55' a.m

Peas Radicles with cards on tips & above

(Glass Jar)

(germinated in peat & suspnded for 24 hr in damp air before cards attached.) Temp 59°—61°

(1) card 5mm from tip 12° I think curved to (18th 8° a m no effect

var. Warwick

(2) tip /O/ unhealthy & mouldy

(30)

(4) 5 mm fr tip (4° 30' P.m very little curved to.) (18th 8° a.m certainly slight curvature to card

(50)

(6) tip /O/

(7) 5 m.m. from tip— (18th 8° a.8 0 / has not grown)

(8) tip. 12 curved from (4° 30 decidedly) (18th 8° a.m slightly slightly curved from)

(9) 5 m (18th 8° slightly decidedly curved to card

(10) on tip (4° 30' greatly curved from but also laterally) (18' 8° a.m. do)

153v

See other side

Ap. 17. 8° .15 a.m avrage time

B

Peas germinated in peat & when cards attached suspnded over water

(1) card 5 m: fr tip (4° 30' perhpps a trac) 18th 8° I think slightly  curved to card)\

(2) tip 12° I think curved (4° 30' perhaps a trace 4° 30' certainly curved from (18th  8° a now straight\ X

(3) 4 mm from tip 12° I think curved (4° 30 yes) 4° 30 do (18' 8°  curvature rather doubtful)✔

(4) tip 18th 8° a.m I  curved from but also laterally.\ X ✔

(5) 4 mm from tip 12° certainly curved to (4° 30' do) (18th 8°  has been curved now nearly straight

(6) tip 12° card from.  (4° 30' plainly) (18' 8° a.m do)✔ X  ✔

(7) 4 mm fr tip 12° curved to (4°. 30' certainly) (18th 8° a.m has  certany been curved to

(8) tip 12° I think from (4° 30' do) (18° a.m do). \ X

   

(9) 4 mm. from tip 12° a little to. (4° 30' plainly) (18th 8° a.m has plainly ben curved to)

(10) 4 m tip — card square on sumit /O/

  

(11) 4 mm from tip 12° strong crvd to (4° 30' conspicuously bent upper part 29° from prpndicular: or lower & upper part frmed together an angle of 151°. (18th 8° a.m no doubt about this curve.)

(12) 4 m tip (4° 30' slightly from) (18th 8° a.m I doubt slight from. )\ X


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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 27 January, 2026