32 
The Bulletin 
lambs were still alive. Ewe 167, which died August 20, had not suckled 
her lamb since July 25, and Ewe 171, which died August 30, had not 
suckled her lamb since June 15. 
It should further be noted in this experiment, as well as in experi¬ 
ments 7 and 8 which follow, that the figures representing the quantity of 
weed given do not represent the quantity actually eaten, since the ewes 
consistently attempted to avoid eating any of the white snakeroot. 
Very much smaller amounts would have produced death, had they eaten 
as much as a pound daily for several days. It is furthermore believed 
that the liberal quantities of grain, kale, and hay which were given to 
stimulate the flow of milk, perhaps by absorbing the toxic principle, 
rendered it less active. 
Experiment 7.—It was planned in this experiment to duplicate Ex¬ 
periment 6 in its entirety with ewes in lactation and suckling lambs. 
The period of lactation was so far advanced, July 7, when the experi¬ 
ment was begun that none of the lambs contracted milksickness, in con¬ 
sequence of which the detailed report of this part of the experiment is 
withheld. The results of feeding white snakeroot to the mothers, how¬ 
ever, will be assembled in Table IV. 
TABLE IV— Data Bearing Upon the Feeding of White Snakeroot to Ewes in Lactation, 
in 1917. Experiment 7. 
Ewe 
No. 
Initial 
weight. 
Lbs. 
Experiment 
begun. 
Date of 
death. 
Days before 
death occurred. 
Weight 
at death. 
Lbs. 
Gain or 
loss. 
Lbs. 
Grain. 
Lbs. 
Feed g 
Weed. 
Lbs. 
iven. 
Kale. 
Lbs. 
Hay 
Lbs. 
31 
104 
July 7 
Aug. 28 
52 
102 
—2 
77 
26 
26 
52 
22 
81 
July 7 
Sept. 2* 
56 
83 
—2 
78 
27 
26 
56 
17 
93 
July 7 
Aug. 6 
30 
95 
2 
39 
14 
26 
30 
15 
93 
July 7 
Sept. 2 
56 
95 
2 
79 
27 
26 
56 
9 
94 
July 7 
Aug. 22* 
46 
104 
10 
65 
22 
26 
46 
16 
135 
July 7 
Aug. 22* 
39 
140 
5 
63 
20 
26 
47 
^Feeding was discontinued on the date indicated. 
Three of the six ewes employed in this experiment died. Ewe 31 was 
discontinued on this experiment, however, August 20, and is subse¬ 
quently reported in Experiment 11, on which she died August 28. Ewe 
16 was discontinued on August 15 and is reported in Experiment 9, 
which resulted in her death August 22. Ewe 17 alone, which died 
August 6, ate most of the weed given and developed a typical case of 
trembles, whereas the weed given to the others was for the most part 
refused. Ewes ISTos. 22, 15, and 9 were placed on pasture at the time 
of discontinuance of the experiment. 
Experiment 6\—This experiment was begun on the same date as Ex¬ 
periment 7, in order to determine whether animals not in lactation be- 
