The Movements and Habits of Climbing Plants. Чарльз Дарвин

3 20 18, 2nd 2 50 18, 3rd 2 55 18, 4th 3 55 (late in afternoon)

      Adhadota cydonæfolia (Acanthaceæ) follows the sun. A young shoot made a semicircle in 24 hrs.; subsequently it made a circle in between 40 hrs. and 48 hrs. Another shoot, however, made a circle in 26 hrs. 30 m.

      Mikania scandens (Compositæ) moves against the sun.

	H.	M.
March 14, 1st circle was made in	3	10
15, 2nd	3	0
16, 3rd	3	0
17, 4th	3	33
April 7, 5th	2	50
7, 6th	2	40	This circle was made after a copious watering with cold water at 47° Fahr.

      Combretum argenteum (Combretaceæ) moves against the sun. Kept in hothouse.

	H.	M.
Jan. 24, 1st circle was made in	2	55	Early in morning, when the temperature of the house had fallen a little.
24, 2 circles each at an average of	2	20
25, 4th circle was made in	2	25

      Combretum purpureum revolves not quite so quickly as C. argenteum.

      Loasa aurantiaca (Loasaceæ). Revolutions variable in their course: a plant which moved against the sun.

	H.	M.
June 20, 1st circle was made in	2	37
20, 2nd	2	13
20, 3rd	4	0
21, 4th	2	35
22, 5th	3	26
23, 6th	3	5

      Another plant which followed the sun in its revolutions.

	H.	M.
July 11, 1st circle was made in	1	51	Very hot day.
11, 2nd	1	46
11, 3rd	1	41
11, 4th	1	48
12, 5th	2	35

      Scyphanthus elegans (Loasaceæ) follows the sun.

	H.	M.
June 13, 1st circle was made in	1	45
13, 2nd	1	17
14, 3rd	1	36
14, 4th	1	59
14, 5th	2	3

      Siphomeris or Lecontea (unnamed sp.) (Cinchonaceæ) follows the sun.

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	H.	M.
May 25, semicircle was made in	10	27	(shoot extremely young)
26, 1st circle	10	15	(shoot still young)
30, 2nd	8	55
June 2, 3rd	8	11
6, 4th	6	8
8, 5th	7	20	Taken from the hothouse, and placed in a room in my house.
9, 6th	8