64 BULLETIISr 365^ U. S. DEPAETMENT OF AGEICULTUEE. 



Delphinium harheyi poisoning, the average time of the animals ex- 

 perimented upon was 3 hours and 25 minutes ; the shortest time was 

 a half hour, and the longest 13 hours. Of the animals poisoned by 

 Delphinium harheyi in 1910 the shortest was 16 minutes and the 

 longest 15 hours and 16 minutes. The average of the 17 cases ob- 

 served was 2 hours and 7 minutes. In 1911 there were 11 cases of 

 animals made sick by DelpMnium harheyi. Of these the shortest 

 period was 13 minutes and the longest 23 hours, with an average of 

 9 hours and 38 minutes. 



Of 6 cases of Delphiniwm memiesii in 1910 the shortest period 

 was 5 minutes and the longest period 2 hours and 45 minutes, with 

 an average of 1 hour and 7 minutes. 



In the single case of Delphinium rohustum which was observed 

 in the Cochetopa Forest, the animal was down during its first at- 

 tack for 1 hour and 7 minutes, and during the second attack on 

 the succeeding day it was down 40 minutes. 



In the case of cattle poisoned by DelpMnium, cucullatum at Grey- 

 cliff, one was not down at all, and, of the others, one was down 

 18 hours and 40 minutes, while each of the remaining two had two 

 attacks, the second in both cases being veiy prolonged. No. 654 

 was down in the second attack 20 hours and 30 minutes. 



In almost all cases the evidence was clear that the animals were 

 nauseated. They frequently moved the head back and forth, some- 

 times shaking it from side to side, these movements clearly indi- 

 cating a condition of nausea. As the sick animals lay upon the 

 ground, there was often belching of gas at frequent intervals, caused 

 by this condition of nausea. In the cases where vomiting actually 

 took place, the animals were almost sure to die. Of all the experi- 

 mental animals observed at Mount Carbon, only one that vomited 

 survived. In all the animals that vomited and died, more or less 

 of the contents of the rumen were found in the trachea and bron- 

 chial tubes. 



The movements of the head also indicated in most cases more or 

 less abdominal pain. Frequently this pain was evidentlj'' very se- 

 vere. The animals were always constipated, sometimes severely so^ 

 and without doubt this constipation was connected with the ab- 

 dominal pain. 



Temperatures were taken in a considerable number of cases, both 

 in 1909 and in 1910. These temperatures varied from 101.2° to 

 102.6° F. There is evidence from this that temperatures, so far as 

 observed, were practically normal. It has been stated by some 

 authors that the temperature at the beginning of the attack is lower. 

 From the observations of the Mount Carbon experimental animals 

 there was no reason to think that larkspur poisoning caused any 

 change whatever in the temperature. 



