[188]

Radicles of beans

Sept. 28-9th 1879

28th F. cut off at 7º 15' P.m 1 1/2 m.m of tip of 6 radicles & placed horizontally over water.— 29th 7º 40' a.m ie after 12 hr these 6 show no geotropism: they

now vary in length Horizontal between 47 & 23 mm. & judging by eye have grown

Frank has described this state at 7º 15 4º. 30' P.m. & has shown great growth

(Sept. 30th 7º 45' a.m.— i.e. after 21º. were a few degrees below 4 3 still quite horizontal with reference to Bean itself; one very slightly geotropic. The 2 others ie aft 36º have grown against side of jar & are mechanically bent down.

Five Control radicles placed at 7º 45' P.m horizontally over water & now 7º 45 am

(29th) aft 12º they are all geotropic 4 strongly & 1 slightly.— They now vary in length between 39 & 22 mm.

see Frank page (B) for state at 4º 30' P.m. 29th.

Sept 30th. 7º 45' am well geotropic, but not so well as often occurs.

6 Radicles Vertically dependent Conclusion

28th 7º 15' P.m F. cut off 1 1/2 mm of tips & suspended vertically over water; now 29th 7º 45' a.m, they are straight down, but 2 of them are strongly curved, & 1 moderately curved by Sach's curvature—

Marked by Big Pins to show degree of curvature

30th 8º a.m marked others with Big Pin to show amt of Sachs Curvature.

Oct 4th— These have not grown irregularly & Sachs curvature not modified sensibly — they have grown greatly in length.

(A

Faba. (Long Pod) Sep 28. 1879 7.15 pm in Study with fire

1 1/2 mm cut off and put in damp air 6 vertical, 6 [horizontal] also 5 control (not cut) put horizontal.

Jar of Jar with verticals Radicles.—

Sep 28          Sep 29. 4. 30

(1) =    27mm —         46 m.m.            Vertical — 18º Sachs

(2) =    41        69        45º Sachs — 65 mm Sep 30. 8 am

(3) =    21 —   36        Sep 30 8 am 73mm

15º Sachs tip bent in reverse direction

(4) =    29 14 .             31        — about 40º Sachs & about 25 to the left

(5) =    17 29—           53        48º Sachs    (Sep 30 8 am. 67 mm)

(6) =    17 —   29        15º. Sachs

Therefore have  all angles measured with vertical (see  grown greatly, though tips cut off  Back)

Jar  with Horizontal Radicles

            Sep 28             Sep 29— 4 25 pm

1 =       17 —   34        4º above Horizon

2 =       26 —   49 ....   18º below

3 =       37 —   61 .      Main root 8º below, extreme tip bends slightly up

4 =       20 —   35        8º below

5 =       32 —   53        5 terminal centimeter 10º below, basal part horiz

6 =       21 *     38        5 below

* Cut off about 1 3/4 mm

(B

Faba— Controls

Sept. 29th 4 30' P.m.

Placed Horizontally over water with tips not cut off.

1 — abt 45 below

2 45º below

3 30.

4 80 below

5. 45 below → Only last centimeter bent & abt 45 below is now 48mm & was 35 ∴ has grown

[191]

Tips cut off Final conclusions

Sept 28th & Oct 5th—

Control put in same case, but we had tried very many score & knew perhaps that tall when a half been [illeg] geotropism in 12 hr

14 [+] 5 [+] 4 [=] 23 had tips cut off for 1 1/2 mm. After 12 hr. these were not affected by geotropism, where the controls become greatly geotropic in this time. — being inclined at 45º below horizon After 24 hr. some became slight showed a trace geotrop only [illeg] about 10º beneath horizon, whereas & — one alone considerably viz 40º.

They had all increased greatly in length

They showed no great irregularity in growth

6 with tips 1 1/2 mm were placed vertically down & these after 6 days have not grown very irregularly

see above 23 [+] 9 with 2 m. [+] 6 vertic [=] 38 — No 37. on account of 1 with punctum not cut off