54 
BULLETIN 365, U. S. DEPARTMENT OF AGRICULTURE. 
time evidence of pain was less marked. No further pronounced 
symptoms appeared during the day of September 2. 
On the morning of September 3 he still exhibited some trembling 
of the muscles of the hind legs and of the flanks and his gait showed 
the same symptoms of stiffness as seen on the preceding day, but 
during the day his condition improved. On this day he ate 6 pounds 
of leaves, stems, and seeds. On the morning of September 4 he 
appeared to be in good condition. The feeding was resumed, and he 
ate about 12 pounds of Delphinium harbeyi. During the latter part 
of the forenoon and in the afternoon he again showed distinct symp- 
toms of poisoning. The back was arched much of the time and he 
straddled in walking. There was distinct evidence of abdominal 
pain. During much of the time he exhibited trembling in the super- 
ficial muscles. Sometimes in lying down he would groan, evidently 
being in severe pain. Gradually, however, he recovered, and on the 
morning of September 5 appeared to be again in normal condition. 
He was fed again, from September 9 to September 14, receiving 
fresh material of Delphinium barbeyi collected at Kebler Pass. 
During this time he ate 126.75 pounds. There were no distinct evi- 
dences of poisoning from this feeding, although he appeared some- 
what dull. 
The results of these experiments seemed to prove conclusively that 
horses can be poisoned with larkspur and that they have the same 
general symptoms as cattle. Table VII gives the summary of these 
feeding experiments. 
Table VII. — Summary of feeding experiments upon hoi 
barbeyi, 1909. 
ses with 
Delphinium 
No. of 
animal. 
Weight of 
animal. 
Amount 
of plant 
fed. 
Date of feeding. 
Part of plant fed. • 
72 
Pounds. 
700 
600 
700 
600 
600 
700 
600 
Pounds. 
11 
168.5 
192 
6 
12 
78.25 
126. 75 
1912. 
July 9-10 
Leaves and stems. 
Leaves, stems, and see 
Do. 
Do. 
Do. 
Seed and seed stems. 
Leaves and stems. 
78 
Aug. 24-Sept. 2 
d. 
72 
Aug. 24-Sept. 4 
78 
Sept. 3 
78 
Sept.4 
72 
Sept. 9-14 
78 
do 
No. of 
animal. 
Time sick until able to 
stand. 
Remedy used. 
Result. 
Amount 
fed to 1,000 
pounds of 
animal 
weight. 
Location from 
which plant 
fed was 
obtained. 
72 
* 
Pounds. 
15.7 
280.8 
274.3 
10 
20 
lll.S 
211.2 
78 
Sick, but able to stand. 
Recovery . . . 
Kebler Pass 
72 
mostly. 
Do. 
78 
Sick, but al 
do 
3le to stand. 
Recovery 
do 
Kebler Pass. 
78 
Do. 
72 
Do. 
78 
Do. 
