The Movements and Habits of Climbing Plants. Чарльз Дарвин

15 16, 5th 8 40 when placed in the hothouse; but the next day the shoot remained stationary.

      Roxburghia viridiflora (Roxburghiaceæ) moves against the sun; it completed a circle in about 24 hours.

      (Dicotyledons.)

      Humulus Lupulus (Urticaceæ) 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 (Lardizabalaceæ), 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 (Lardizabalaceæ), placed in hothouse, moves against the sun.

	H.	M.
March 28, 1st circle was made in	3	30
29, 2nd	3	45

      Sphærostemma marmoratum (Schizandraceæ) 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 (Menispermaceæ) 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

      Thryallis brachystachys (Malpighiaceæ) moves against the sun: one shoot made a circle in 12 hrs., and another in 10 hrs. 30 m.; but the next day, which was much colder, the first shoot took 10 hrs. to perform only a semicircle.

      Hibbertia dentata (Dilleniaceæ), placed in the hothouse, followed the sun, and made (May 18th) a circle in 7 hrs. 20 m.; on the 19th, reversed its course, and moved against the sun, and made a circle in 7 hrs.; on the 20th, moved against the sun one-third of a circle, and then stood still; on the 26th, followed the sun for two-thirds of a circle, and then returned to its starting-point, taking for this double course 11 hrs. 46 m.

      Sollya Drummondii (Pittosporaceæ) moves against the sun kept in greenhouse.

	H.	M.
April 4, 1st circle was made in	4	25
5, 2nd	8	0	(very cold day)
6, 3rd	6	25
7, 4th	7	5

      Polygonum dumetorum (Polygonaceæ). This case is taken from Dutrochet (p. 299), as I observed, no allied plant: follows the sun. Three shoots, cut off a plant, and placed in water made circles in 3 hrs. 10 m., 5 hrs. 20 m., and 7 hrs. 15 m.

      Wistaria Chinensis (Leguminosæ), in greenhouse, moves against the sun.

	H.	M.
May 13, 1st circle was made in	3	5
13, 2nd	3	20
16, 3rd	2	5
24, 4th	3	21
25, 5th	2	37
25, 6th	2	35

      Phaseolus vulgaris (Leguminosæ), in greenhouse, moves against the sun.

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