LARKSPUR POISONING OF LIVE STOCK. 55 
For our purpose it did not seem necessary to carry on any further 
experimentation with horses as there is no reason to think that they 
are ever poisoned upon the range. Observation of horses on the 
range and in pastures containing larkspurs showed that these animals 
do not eat the larkspur early in the season. In the fall after the 
tall larkspur has become dry, horses, like cattle, seem to have a fond- 
ness for the larkspur leaves, although they do not eat them so 
greedily as do the cattle. Inasmuch as the larkspur at this time is 
not poisonous, no harm results from this feeding. 
EXPERIMENTAL FEEDING OF DELPHINIUM BARBEYI TO SHEEP IN 1910. 
Five experiments were carried on of feeding Delphinium barbeyi 
to sheep. These experiments were commenced June 3 and continued 
until July IT. Three of the animals, Xos. 118, 104, and 114, were fed 
tops of the plant, including the leaves and stems. The other two, 
Nos. 108 and 116, were fed tops, including the leaves, stems, and 
flowers. Table VIII gives a summary of these experimental feedings. 
Case 118, weighing 97 pounds, was fed 67.75 pounds between June 
3 and July 22 without any results. Case 104, weighing 90 pounds, 
was fed 68 pounds between June 23 and July 5 without any injurious 
results. Case 114, weighing 65 pounds, received 31.75 pounds be- 
tween June 23 and July 5 without results. Case 108, weighing 94 
pounds, was fed 104 pounds between July 6 and July 17, or 10 pounds 
more than 'its own weight, without being poisoned. Case 116, weigh- 
ing 93 pounds, received 121 pounds between July 6 and July 17, or 
28 pounds more than its own weight, without being affected. 
Thus of these 5 sheep, eating from 48.8 to 130.1 pounds, on a basis 
of 100 pounds average weight, none were injuriously affected by the 
plant. 
EXPERIMENTAL FEEDING OF DELPHINIUM BARBEYI TO SHEEP IN 1911. 
In 1911 two experiments were made of feeding Delphinium, bar- 
beyi to sheep. Although the general results of the work of 1910 were 
conclusive, it seemed best to feed some of the plant at the early 
stages of its growth in order to make sure that it was not poisonous 
at that time. 
Sheep 134, weighing 140 pounds, was fed from June 19 to June 
25, 49 pounds of the leaves and stems of Delphinium barbeyi before 
blossoming. This was at the rate of 35 pounds per 100 pounds of 
weight of the animal. 
Sheep 135, weighing 136 pounds, between the same dates, was fed 
37 pounds of the same material, or 27.2 pounds per hundredweight 
of the animal. 
Neither of these sheep showed any effects from the feeding, and in- 
asmuch as the amount fed. relative to the weight of the animal, was 
