[99]

Cassia from F. Muller S. Brazil. 1877

Sept 24th last night Cots. were in close contact & embraced first leaves almost entirely. This morning at 6° 45' greatly widely open. — At 7° 50' nearly horizontal stem not tied— Cot. become oblique toward light

[in margin:] Movements traced of line between Cots.

7° 50' first blue dot.
8° 20'

The early movement may ha been due to shaking &c. &c
9°. 15 much risen
10. 18. down
10 30' up— again
10 36' rising
11°  
11° 12' down again
11 23 still down.
11° 35
11 45. still down
12° 2' first red dot
12. 18' still gong down
12. 33' up.
12° 49' across the blue
1. 25' up
1. 50

1. 52° first dot

}

2. 17 I used blue again
2. 40' back again to same spot

40 [-] 37 [=] 3
2. 58 up to red line
3. 30'
3. 55 moved up very little
4 28 up.— & crossed red line moved down
5°— greatly risen from sleep

5° 15 from light

5. 25'

(6. 20' almost on top of glass

(Used)

(Next morning still out of glass very cold 6˚45)

[99v]

1

Chap VII

Miles (It is not my intention here to describe the several so-called races of man; but to enquire what is the value to their difference between them under a classificatory point of view; & as far as this may be possible, in what way how they were have originated.

In determining whether two or more allied forms ought to be ranked as species or as varieties, naturalists, are practically guided by the following considerations; namely the amount of difference between them, and whether such differences relate to a face or to many points of structure; whether they and are of physiological importance; & especially whether they are constant.

Constancy of character is what is chiefly & eagerly sought for & desired by the classifier naturalists. Whenever it can be shown, or rendered probable, that the forms in question have long remained as distinct as they now are for a long period, this becomes an argument of great much weight for considering treating them as species.

[Descent 1: 214: "It is not my intention here to describe the several so-called races of men; but to inquire what is the value of the differences between them under a classificatory point of view, and how they have originated. In determining whether two or more allied forms ought to be ranked as species or varieties, naturalists are practically guided by the following considerations; namely, the amount of difference between them, and whether such differences relate to few or many points of structure, and whether they are of physiological importance; but more especially whether they are constant. Constancy of character is what is chiefly valued and sought for by naturalists. Whenever it can be shewn, or rendered probable, that the forms in question have remained distinct for a long period, this becomes an argument of much weight in favour of treating them as species."]