RECORD: Darwin, C. R. [1873]. 30 m of n Ammonia 1 gr to 30 oz added to 4 drachms 240 minims of water. CUL-DAR56.25. (John van Wyhe ed., 2002-. The Complete Work of Charles Darwin Online, http://darwin-online.org.uk/)
REVISION HISTORY: Text 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 volumes CUL-DAR 54-61 contain material for Darwin's book Insectivorous plants (1875).
25
Abstracted
(16
July 14th /73/ Nitrate of Ammonia weighed by Borders Double Method 1 gr. to 20 oz.
(1) water 10O 22' (11O 25' , inflected) (4O 35' outer discals forming ring, 1 marginal inflected a few sub-marginals, sub-inflected) (15th, 8O all but outer marginals inflected)
Nitrate 10O 14' —(10. 21' some inflect) (not blackened) 10O 27' enormous inflect
(10' 40' all inflected except 8 & these sub-inflected) (Perhaps darker red) (11O. 25' not black)
(4O 35', all inflected & lamina immensely & no segregation as seen through lens !
(25th, 8O all)
(2) water 10O 23' (11O 25' 1 sub-inflected) (4O. 35'. do)
15' 8O slight ring on disc)
nitrate small pale leaf 10O 16 (10O 27 much I) (11. 25' a good deal of sub-inflect)
(4O. 35' all inflected, lamina immensely infl — no segregation visible through lens !!!
(4O 35' discals forming ring, sub-marginals sub-inflected.) (15th 8O reexpanding)
(3) water 10O. 25; (11O 25' , O). (4O 35'. O) (15th . 8O, O/
Nitrate small palish 10O 17' (10 27' much I.) (11. 26' almost all the sub-marginals I.)
(4O. 40' all excpt 5 inflected) I think very fine segregation as seem through lens.)
(15 8O all excpt 3)
(4) water 10O 27' (11. 27' . 1 long-Head) (4O. 40' discals forming a ring; 1 long-Head inflected ; sub-marginals well sub-inflected) (15th, 8O, do)
Nitrate 10O. 18' (10 28' some inflection) (11O 26', some over pedicel I.)
(4O 40' sub-marginals slightly inflected.) (15th, 8O reexpanding
(4O 30' glands very little darker than water specs) !
(15th 8O 10' I do not see that Glands at all darker than in water spec.s : fine-grained segregation but so there is in water specimens
21
Abstracted
(17
July 14 /73/ Nitrate of Ammonia 1 gr to 40 oz
――――——
(5) 1 water 10 50' (4O 28' all but about 10 marginals
(11O 28' , O) (4O 45' outer discals & sub-marginals forming good ring.)
(15th, 8O 10', do)
Nitrate 10O 44' 12 (10 56' much I) (11O. 28 16 [+] 28 [=] 44 all but about 10 marginals.)
(1O all but 5 inflected) (4O. 45', lamina sub-inflected all excpt 3 outer rows inflected.)
(15th 8O 10' lamina inflected do—) Glands not at all darker.)
(6) 2 water (4O 45', 5 marginals inflected)
(15' 8O 10' discals & sub-marginals well inflected)
Nitrate 10O 45' (10O 56' great I (11O 28' 28 [+] 15 [=] 43 all but 7 marginal I)
(4O 45' do) (15th 8O 15' all but 2 grandly inflected lamina inflected)
(7) 3 water 10 54' —(11O 29' ,)) (4O 45', )) (15', 8O 15', O)
Nitrate old leaf 10O. 47' (11O 29' only 2 or 3 I) (4O 45', do)
(15th 8O 15' a trace of a ring on disc)
(8) 4 water 10O 55' (11O. 30', O) ,(4O 45, O)
(15' 8O 15' the outer discals & sub-marginals slightly inflected)
Nitrate 10O 48' (10O 57' great I.) 11O 30 all but 4 I.)
glands dark red, but not blacked) (1O do about colour) (4O, 45' all except 6 inflected.) (15th 8O 15 every single tentacle inflected & all but 2 or 3 closely, lamina inflected)
1O 45' a general summary of all 8, those in the Nitrate have darker-red glands
It is very remarkable how little segregation compared with the tentacles in weaker solution of Phosphate.—
(over) over
136
Gluten ( 6 & 7 ) continued — Sept 16 gluten in water, much softened & fine blue from some fungus ? (Sept 17th 8O 15' in the open leaf with stained gluten looks healthy glands on disc a shade darkened & other inflected leaf glands vy black, secretion still acid (18' 19. 20' The 2d leaf now expanding, glands blackened, much gluten left on disc : secretion still acid) (19th 10O 15 — Both leaves expanded do do do much gluten left on disc
p 74 3
Gluten X
21v
15th. 8O 15'
There can be no shadow of doubt that the 4 in the sol of Nitrate 1 gr to 40 oz infinitely more affected than 4 corresponding Water spec.s but glands not plainly darker ; nor more or so much segregation.
22
Abstracted
(18
July 15 . Nitrate of Ammonia 1 gr. to 100 oz
――――——
(1) water 8O 37 very young leaf (11O 50 [-] 27 [=] 13 outer discls infl a little) III.
(4O 35 narrow ring on disc)
nitrate 8O. 29 very young leaf red (9., 7' a little inflection, about 9 tentacles)
(11O 50' outer discals inf) (4O 35' many on disc like water spec.)
(2) water 8O. 37' (7O 7' 1 inflected) (11O 50'. outer discl a little irregular) (4O 35'. do)
nitrate 8O 30' fairly large leaf) (8O 38' consider inflect) (10O 37' all but 13 inflected)
(11O 50' do) (4O. 40' about 18 expanded now)
(3) water 8O 40' — (9. 5' 1 inflected) (11O 50' 2 inflect) —(4O 40' all expanded)
nitrate rath small leaf 8O 33' —(8O 43'. all inflected except 3) & these sub-inflected)
(11O 50' do) (4O 40' do)
(4) water 8O 42 very large leaf (11O 53' outer discals a trace inflect)
4O 40' outer discals somewhat inflected)
nitrate 8O. 35' (11O 53'' outer discals a mere trace) (4O 40' do.)
Glands not darker
23
Abstracted
(19
July 15th Nitrate of Ammonia 1 gr. to 400 oz . (always 30 dra minim)
(5) water 10O 9. 41' (11O 48'— 9 marginals inflect) (4O, 40 outer discals & sub-marginals forming a fine rind.)
Nitrate 9. 34' young leaf (10O. 33' perhaps a trace) (11O 48' outer discls a little)
(4O 40' trace of ring on disc)
(6) water 10 9 43' (10O 25' ,O) (11 50', O) (4O .45' trace of ring on disc)
nitrate a large leaf 10O 9. 37' (10O. 47' considerable inflection) (10O 33' I daresay 60 inflected)
(11O 50', 56 marginals inflect) (4O 43' do & outer discals & inner marginals forming fine ring, yet many marginals not in the least inflected.) (This leaf much more affected than any others ; but very little difference form water specimens)
(7) water 10O 9. 44' — (10O. 38' , O) (11O 50, 2 or 3 sub-marginals with a trace of I.)
(4O 45' all reexpanded)
nitrate 10O 9. 38'. (10O 35' a few sub-marginals over pedicel inflected)
(11O 50' a few outer discal sub-inflected) (4O 45 trace of ring on disc.)
(8) water 10O 9. 45' (10O 34' a little irregular) (11O 50' do) (4O 45, merest trace of ring on disc.)
nitrate 9.. 35' (10O 34' about 18 inflected
(11O 52' 18 marginals inflected) (4O 45' about 9 marginals inflected
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Abstracted
(20
July 16 Nitrate of Ammonia 1 gr. to 400 oz .
(1) water 8O 15' —(9. 14O, O) (11O 27', O) (4O 40' I find 2 marginal have been inflected)
nitrate 8O 7' —(8O 45 a few inflected) (9. 14' about 26 marginals sub- inflected or inflected) (11O 30' do)
4O 45 all reexpanded
(2) water 8O 16' (9. 15, O) (11O 30', one or 2 outer discal sub inflected)
(4O 45' do)
nitrate 8O 8' (9. 15' a trace in outer discals) (11O 30' do) (4O 45' do)
(3) water 8O 18' (8O 15' 2 marginal Long Heads inf.) (11O 30', so with outer discals sub-inflected) (4O 45' good ring on disc)
nitrate 8O 10' (8O 45' a few inflected) (9. 15' , 9 or 10 marginals inflect. or sub inf)
(11O 30', 14 or 15 tentacles sub-inflected) (4O 45' almost reexpanded)
(4) water 8O 18' (9. 15 a few Long-Heads sub-inflected) (11O. 31' the long-Heads have become straight, a trace of inflection in outer discals) (4O 45' slight ring on disc.)
nitrate 8O 12' (9. 16' a trace on disc) (11O 32' do)
(4O 45' no inflection)
11O 33' The nitrate ones not more plainly inflected than the water, or only a trace.
4O 45'. The water spec now showed more inflection than the Nitrates.
Citation: John van Wyhe, ed. 2002-. The Complete Work of Charles Darwin Online. (http://darwin-online.org.uk/)
File last updated 30 November, 2025