Nov. io, 1913 
Alkaloidal Content of Belladonna Plants 
131 
RESULTS OE THREE YEARS' OBSERVATION 
During the summer of 1909 three rows of belladonna plants were 
started at the Arlington Experimental Farm directly from field sowing. 
The plants made a fair growth in the late summer and fall, but did not 
bear seed. The following spring they made a good growth and 24 plants 
were carefully staked out for this investigation. Since the plants made 
only a partial growth in the preceding year, they were considered as first- 
year plants and are so referred to throughout this article. The only 
picking from these plants in the first year was made in June, when most 
of the plants were in full bloom, although some were bearing berries of 
considerable size. Table I shows the general physical condition of the 
plants and gives the percentage of alkaloids in the leaves of each indi¬ 
vidual plant. 
