34 
BULLETIN 947, XL S. DEPARTMENT OF AGRICULTURE. 
TOXICITY OF FLOWERS. 
Table 9 gives the results obtained when flowers of H. hoopesii 
were fed in the corrals: 
Table 9. — Summary of corral feeding of flowers. 
Animal. 
Days 
fed. 
Sheep 343. 
Sheep 357. 
1915 
Sheep 37S. 
Sheep 373. 
1917 
Sheep 446 
Average . 
Days. 
Quantity led per 
hundredweight 
of animal. 
Total. 
Daily 
average. 
Pounds. 
8.14 
15. 936 
89.643 
72. 055 
Pounds. 
1.36 
1.77 
1.949 
1.471 
2.272 
Days 
before 
sick. 
Days. 
22 
Quantity fed per 
hundredweight 
of animal to pro- 
duce sickness. 
Total. 
Pounds. 
66.768 
30. 303 
47.755 
Daily 
average. 
Pounds. 
1.964 
1.595 
2.171 
1.943 
Result. 
Not sick. 
Do. 
Sick. 
Very sick. 
Do. 
These results show that the toxicity of the flowers is practically 
the same as that of the leaves. 
TOXICITY OF STEM LEAVES. 
The summaries of forced feeding of green leaves, in Tables 6 and 7, 
were of experiments in which radical leaves were used. For the pur- 
pose of comparison, forced feedings of stem leaves were made in 3 
cases, as shown in Table 10. 
Table 10. — Summary of forced feedings of stem leaves. 
Animal. 
Num- 
Davs ber of 
fed. feed- 
ings. 
Quantity fed per 
hundredweight 
of animal. 
Result. 
Total. 
Daily 
average. 
1915 
Sheep 331 
Sheep 340 
Sheep 347 , 
Days. 
Pounds. 
2.645 
2.645 
2.756 
Pounds. 
2.645 
2.645 
2.756 
Died. 
Sick. 
Not sick. 
With these animals the feeding was given in one day. Comparing 
the results with Table 6, in which are summarized the feedings of 
radical leaves in one day, it is evident that the dosage is practically 
the same, not far from 2.5 pounds, with a considerable margin of 
possible variation. 
COMPARATIVE TOXICITY OF DIFFERENT PARTS OF THE PLANT. 
Summarizing the averages of the feedings of different parts ol 
the plant we get the following: 
Whole plant produced sickness when 2.17 pounds was fed daily for 21.6 days. 
Leaves produced sickness when 2.228 pounds was fed daily for 21.58 days. 
Flowers produced sickness when 1.943 pounds was fed daily for 25.1 days. 
