' tO INTRODUCTION. 
10. Watchings, (vigilig), when flowers open or 
shut at a particular hour of the day or night. 
11. Grossification, (grossificatio), when after flor- 
escence the future fruit begins to grow large. 
12. Maturation, (maturatio), the time when the 
iruit becomes ripe. | 
13. Dissemination, (disseminatio), the means by 
which the fruit after it becomes ripe is dissemin- 
ated. 
N. In the Physiology we shall treat es of 
these several periods, 
§ 8. 
The various sizes of plants and of their parts has 
given occasion to the following measures. 
1. A hair-breadth, (capillus), the measure of a 
hair, or the twelfth part ‘of a line. 
2. A line, (linea), the length of the white cres- 
cent at the root of the nail of the middle finger, or 
the twelith part of an inch. 
3. A nail length, (wnguis), the length of the nail 
of the middle finger, or half an inch. 
4. An inch, (pollex, uncia), the length of the first 
joint of the thumb, the twelfth part of a foot. 
5. A hand-breadth, (pa/mus), the breadth of the 
four fingers of the hand, or three inches. 
6. A fpan, (dedrans), as tar as one can span with 
the thumb and the little finger, or nine inches. 
7. A small span, (spithama), as far as one can 
span with the thumb.and forefinger, or seven inches. 
8. A foot, (pes), the length from the elbow to the 
origin of the hand, or twelve inches. 
1 9 A 
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