The Rate of Revolution of various Twining Plants.
(ACOTYLEDONS.)
Lygodium scandens (Polypodiaceae) moves against the sun.
H. M.
June 18, 1st circle was made in 6 0
18, 2nd 6 15 (late in evening)
19, 3rd 5 32 (very hot day)
19, 4th 5 0 (very hot day)
20, 5th 6 0
Lygodium articulatum moves against the sun.
H. M.
July 19, 1st circle was made in 16 30 (shoot very young)
20, 2nd 15 0
21, 3rd 8 0
22, 4th 10 30
(MONOCOTYLEDONS.)
Ruscus androgynus (Liliaceae), placed in the hot-house, moves against the sun.
H. M.
May 24, 1st circle was made in 6 14 (shoot very young)
25, 2nd 2 21
25, 3rd 3 37
25, 4th 3 22
26, 5th 2 50
27, 6th 3 52
27, 7th 4 11
Asparagus (unnamed species from Kew) (Liliaceae) moves against the sun, placed in hothouse.
H. M.
Dec. 26, 1st circle was made in 5 0
27, 2nd 5 40
Tamus communis (Dioscoreaceae). A young shoot from a tuber in a pot placed in the greenhouse: follows the sun.
H. M.
July, 7, 1st circle was made in 3 10
7, 2nd 2 38
8, 3rd 3 5
8, 4th 2 56
8, 5th 2 30
8, 6th 2 30
Lapagerea rosea (Philesiaceae), in greenhouse, follows the sun.
H. M.
March 9, 1st circle was made in 26 15 (shoot young)
10, semicircle 8 15
11, 2nd circle 11 0
12, 3rd 15 30
13, 4th 14 15
16, 5th 8 40
when placed in the hothouse; but the next day the shoot remained stationary.
Roxburghia viridiflora (Roxburghiaceae) moves against the sun; it completed a circle in about 24 hours.
(DICOTYLEDONS.)
Humulus Lupulus (Urticaceae) follows the sun. The plant was kept in a room during warm weather.
H. M.
April 9, 2 circles were made in 4 16
Aug. 13, 3rd circle was 2 0
14, 4th 2 20
14, 5th 2 16
14, 6th 2 2
14, 7th 2 0
14, 8th 2 4
With the Hop a semicircle was performed, in travelling from the light, in 1 hr. 33 m.; in travelling to the light, in 1 hr. 13 m.; difference of rate, 20 m.
Akebia quinata (Lardizabalaceae), placed in hothouse, moves against the sun.
H. M.
March 17, 1st circle was made in 4 0 (shoot young)
18, 2nd 1 40
18, 3rd 1 30
19, 4th 1 45
Stauntonia latifolia (Lardizabalaceae), placed in hothouse, moves against the sun.
H. M.
March 28, 1st circle was made in 3 30
29, 2nd 3 45
Sphaerostemma marmoratum (Schizandraceae) follows the sun.
H. M.
August 5th, 1st circle was made in about 24 0
5th, 2nd circle was made in 18 30
Stephania rotunda (Menispermaceae) moves against the sun
H. M.
May 27, 1st circle was made in 5 5
30, 2nd 7 6
June 2, 3rd 5 15
3, 4th 6 28