52 
BULLETIN 365, U. S. DEPABTMEXT OF AGEICULTUEE. 
seem necessary to give the history of the cases in detail. In the dis- 
cussion later in this paper the minor points of difference will be 
brought out. Table VI gives the summary of these feeding 
experiments. 
Table VI. — Summary of feeding experiments upon eattle with Delphinium 
cucuUatum. 
No. of 
animal. 
Weight of 
animal. 
Amount 
of plant 
fed. 
Date of feeding. 
Part of plant fed. 
650 
653 ... 
Pounds. 
550± 
700± 
600± 
500+ 
700± 
550± 
Pounds. 
12.5 
18.5 
21 
24.5 
2.5 
17.5 
1912. 
June 28-29 
,Tutia SO-.Tyily 1 
Leaves and stems. 
Do. 
654 
652 
653 
651 
Julv23 
August 8-9 
August 30-31 
September 3 
Leaves, stems, and flowers. 
Leaves, stems, flowers, and seeds. 
Leaves, stems, and seed. 
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. 
650 
Slightly sick; not down 
18 hours, 40 minutes. . . 
4 hours, 15 minutes, 
first attack; 20 hours. 
30 minutes, second 
attack. 
25 minutes, first at- 
tack; 14 hours, sec- 
ond attack. 
Recovery... 
do 
do 
do.. 
Pounds. 
22.7 
26.4 
35 
49 
3.5 
31.8 
653 
654 
652 
653 
Arecolin, strychnin, 
magnesium sulphate, 
glycerin, and whisky. 
Physostigmin, pilocar- 
pus strychnin, linseed 
oil. 
Physostigmin, pilocar- 
prn, and strychnin. 
Do. 
Do. 
Do. 
Do. 
651 
Do. 
1 " 1 
POISONING OF HORSES BY LARKSPUR. 
Apparently there are no accounts of the poisoning of horses by 
larkspur. Among the stockmen it is a general belief that horses 
are not poisoned by this plant and can be grazed with impunity in 
localities where cattle are certain to suffer from the poison. In 
some localities in the Sierras where many cattle have been lost 
within limited areas, the ground has been fenced in and success- 
fully used for pasturing horses. Although the belief is general 
that horses are not poisoned by larkspur, it does not follow that they 
can not be. Accordingly the following experiments were under- 
taken with cases 72 and 78. 
Case 72. 
Case 72 was a horse about 4 years old which had been used in 
previous feeding experiments. During July 9 and 10 he ate 11 
pounds of leaves and stems of Delphinium barbeyi without any 
effect. Another experiment was made, commencing on the morning 
of August 2-4 and continuing until September 4. During this time 
he ate 192 pounds, or, on the basis of 1.000 pounds of weight, 271.3 
pounds. The feeding was then interrupted on account of storms, 
