On the Generation of Plants. 
507 
1st. That In each of two qualities of Hemp, the spikes of which had 
been divided into three parts, the one at the summit, yielded propor¬ 
tionally more females, and the middle one more males. 
2nd. That in each of two qualities of Hemp, the spikes of which had 
been divided into three parts, the one at the summit yielded proportion¬ 
ally more females, and the one at the base, more males. 
3rd. That the seed which was lowest on the stems, yielded propor¬ 
tionally most males. 
4th, That the fertile seed yielded proportionally most females; but 
in this case, the numbers were too small to authorize the inference of the 
production of females being wholly owing to fecundation. 
5th. That the smallest seed, or that produced at the base of the spike, 
yielded more females than the larger seed produced at the middle, and 
less than that of middle size produced at the summit. In Hemp, as in 
many birds and quadrupeds, very large or very small germs yield males, 
—germs of middle size, yield females. 
He has given at the conclusion of his paper, a curious table of the re¬ 
sults obtained by his experiments upon Hemp, in 1830. He divided it 
into four qualities, according to the nature of the seed. 1, Hemp-seed 
not fecundated during two generations.—2, Hemp-seed, not fecundated 
during one generation.—3, Hemp-seed, furnished only from the base 
of the stems.—^and 4, Hemp-seed fecundated. 
The two first, were further separated into three divisions, according 
to the relative situation of the seed upon the length of the spike:—1st. 
Seed furnished by the summit,—2nd, Seed furnished by the middle,— 
and 3rd, Seed furnished by the base. The two other qualities, were 
each separated into two divisions, one furnished by the upper, the other 
by the‘lower half of the spike. A hundred seeds were taken at random, 
from each division, of the first three qualities. 
Q 0 A L1 T I F, 8, 
n VI R F. R S , 
SUMMIT. 
MIDDLE. 
BASE. 
TOTAL. 
RELATIVE 
WEIGHTS. 
AM) 
1 
RELATIONS. 
males- 
ferns. 
males 
ferns. 
males. 
ferns. 
males. 
ferns. 
suinm 
midd. 
base. 
)srt quality, 
Numbers,. 
479 
559 
1222 
1205 
225 
234 
1926 
1998 
100 
104 
94 
Relation,. 
100011167 
1000 
986 
1000 
1040 
1000 
1037 
2nd quality, 
Numbers,. 
870 
933 
2549 
2615 
951 
975 
4370 
4523 
100 
104 
99 
Relation,. 
1000 
1072 
1000 
1026 
1000 
1025 
1000 
1035 
3rd quality, 
Numbers,. 
352 
367 
181 
178 
533 
545 
100 
98 
Relation,... . 
1000 
1042 
1000 
983 
1000 
1022 
4 th quality, 
Numbers,. 
36 
42 
13 
15 
49 
57 
Relation,. 
1000 
1166 
1000 
1154 
1000 
1163 
Total, . 
1737 
1901 
3771 
3820 
1370 
1402 
6878 
7123 
Relation,. 
1000 
1094 
1000 
1023 
o 
o 
o 1 
1035 
