[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.

[data not transcribed]

(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."]