Nov. io, 1913 
Alkaloidal Content of Belladonna Plants 
145 
Table VII .—Percentage of alkaloids above and below the average 1 in the leaves of indu 
vidual belladonna plants at Arlington, Va. t in ign and IQI2. 
[The figures given are based on the season averages of all the pickings. In each of the 40 plants designated 
by a star (*) the percentage of alkaloids above or below the average of the entire lot in 1911 varies by 
not more than one-tenth of 1 per cent from that in 1912.] 
5 - 
6 * 
7 . 
8 * 
9 - 
10* 
11 . 
12* 
13 * 
14* 
15* 
16* 
17 . 
18*, 
19*, 
20*, 
21*. 
22. 
23*. 
24. 
25 . 
26. 
27. 
28*, 
29*, 
30*. 
Plant No. 
Alkaloids above 
(+) or below (—) 
the average (per 
cent). 
Plant No. 
Alkaloids above 
(4-) or below (—) 
the average (per 
cent). 
19x1. 
1912. 
1911. 
1912. 
—0.068 
4- ■ 179 
4- .023 
32*. 
— .006 
—0.003 
— .125 
— . 116 
33*. 
— .046 
4- .044 
— .014 
4- .014 
34*. 
— . 118 
— • 139 
-f .047 
— .071 
35. 
— . 102 
4- .071 
— .008 
— .073 
36* . 
- .086 
— . 062 
4- .070 
— .081 
37*. 
— . 017 
4- .003 
4- .064 
+ • 144 
38*. 
4- .063 
4- .061 
. 048 
— • 116 
39*. 
- .141 
— .072 
— . 029 
- • 125 
40*. 
4- .028 
— .012 
-f .087 
- -OSS 
41*. 
— . 104 
— .076 
4- . 109 
+ *093 
42 . 
4- .001 
4- .134 
4* • 107 
— .023 
43*. 
— -033 
— . 012 
— *044 
- ■ 125 
44* . 
— .043 
— .082 
— .038 
4- .005 
45* . 
— .044 
— .085 
4- .077 
4- .086 
46*. 
— .142 
— . 139 
— .059 
4~ • 066 
47*. 
— *079 
— . 040 
4- .019 
— . on 
48 . 
4- .036 
- .093 
— .005 
— .059 
49* . 
4- .024 
— . 064 
4- .036 
+ • 133 
5 °. 
— .005 
— . 192 
4- .098 
4- . 199 
IW*. 
4- . 150 
+ -174 
1 
0 
—I 
00 
4- ■ 041 
2W*. 
— . 001 
4- .015 
— . 129 
- ■ 144 
5W*. 
4- .052 
4- .081 
6w*. 
4- . 234 
4- • 243 
— . 226 
— .056 
7W*.. 
4* • 172 
4- . 127 
+ -03s 
4- . x8i 
8w. 
4- .045 
- .077 
— . 090 
4- .in 
9W*. 
— .018 
— .004 
— . 019 
4- .027 
IOW*. 
4- .055 
4- .065 
4- * 224 
4- . 159 
IIW*. 
- .088 
— .001 
— . 002 
4- .027 
1 Average for 1911, 0.532 per cent; for 1912, 0.545 per cent. 
In the plants in Table VII there are a number which are conspicuous 
because of the high or low percentage of alkaloids in their leaves. Plants 
Nos. 3, 23, 34, and 46 are without doubt greatly inferior to the others 
from a medicinal point of view. On the other hand, Nos. 21, 29, iw, 
6w, and 7w are greatly superior to any others in the list. Furthermore, 
these plants manifested the same characteristics not only on the average 
but at each picking. The recapitulation given in Table VIII shows 
this very clearly. 
