26

May 27th 8º. 50. Radicles long of Beans extended Horizontally. 2 with cards sand-paper & shell-lac on one side 3 with do beneath to see if will turn up opposed to geotropism. Whether card or geotropism acts energetically carries the day

4º. 50' (10) Obliquely lateral card— no geotropism, possibly trace of laterl deflection (28th, 8. 15 distinctly geotropic & bent from card)— after 24º

(12) card on lower side a mere trace of geotropism —(28th 8º 15' am slight geotropism) aft 24º

(13) point card on lower side very long root point geotropic slightly (28th 8º 15 a.m after 24º, hardly any geotropism. but root extremely long & has ceased to grow

(14) hardy any effect, card obliquely lateral roots very old (28. 8º 15 very slight geotropism., no no lateral effect roots very long & old.) & has not grown) [sketch]

(17) Card on lower side point slightly geotropic (28th 8º 15. bent at right angles downwards; this youngest radicle of lot

9º. 15' 3 radicles bent down vertically by wool tied to pin so as to make end of radicle perpendicular downwards with sand-paper & shell-lac laterally. Thread tied so near base as not to affect irritable part.—

5º P.m tip of one slightly bent from card, the other 2 not affected one has become oblique by elasticity—

28th 8º a.m. not one of the 3. affected.) ⨀

27

Radicles of Beans— suspended to lid of vessel with water.—

May 27th 10º 45' a.m.

3 Radicles painted longitudinally on one side with thick lamp-black & olive oil.— some long & some moderate radicles— When radicles slightly curved oil painted so as to make straight & to curve on opposite side.

1 radicle with only terminal 8—9 m.m thus painted.

3 Radicles painted same manner with thick precipitated chalk & olive oil

27th 4º. 45' no effect on any

over

27v

Repainted 28' 8º 15'  on 2 successive days   30' a.m.

(B) Black 28th 8º 15 no effect— 29th 8º a.m no effect no

Panted with oil

☞ (as oil stops growth shows that shell-lac. did not injure tips of roots)

D Black 28' 8º 15. bent from (??) black (29th 8º a. bent clearly to black)

ie unpainted side grew quickest

G. (Black) 28' 8º 15 no effect (29th 8º a. bent very slight to  i.e.   black  unpainted side grew quickest

5/7 acted

H ( White) 28' 8º 15 no effect (29' 8º no effect do.) no

I. (white) 28' 8. 15 bent to white (29th 8º bent to white) ie unpainted side grew quicks

(L) white 28. 8. 15 a bent to white   (29th 8' clearly bent to white i.e. unpainted side grew quickst

(M.) Black 28' 8º 15 bent to black(?) (29th 8º Clearly bent upper side from black

(Now 29th 8º now placed roots in water & Kept in Study in dark)

(When it is said bent to Black or white, it shows that the unpainted side has grown quicker.)

28

May 29th 1878    Bean Radicles

10º 55' square of sand-paper & shell-lac to 6 beans with young radicles extended horizontally, paper fixed to under side, & rather obliquely to 2 of them, to see if Geotropism will conquer & make roots quite perpendicular downwards.

stet→ All the square have been put by mistake favouring geotropism. !!!!

(10) 4o 40' straight— card on lower side— Radicle Beans placed Horizontally.

  30th 8º of course all pointing down perpendicularly Keep to see if they will bend beyond perpendicular, as card left attached—

(30th 4. 45 It is remarkable that none of them are pointing away from card— it certainly seems as if grew accustomed to stimulus of card.) (31st 4º 30' P.m 2 of the radicles have tips very slightly deflected from the card & from the perpendicular as if card had acted a little.—

29

Mem. Cielski burning with Heated platinum N. silver

29th 11º. 15' rubbed tip of radicle laterally or on back of 6 radicles. with stick of Nitrate of Silver— in several (30' 8º. a.m In some cases the Blackening had extended all round, in 2 cases no more flexure from blackened side than other side, but in 3 case seemed decided flexure from blackened side put in Water.

31' 11º a.m. Four are now quite hooked turning from bn blackened side— 2. equally blackened all round 1 straight & 1 curved— The 7th & last rather more curved to blackened side a doubtful case —

Evidence sufficient