52 



BTJLLETIl^ 365, U. S. DEPARTMENT 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 cattle with Delphinium 

 cucullatwn. 



No. of 

 animal. 



Weight of 

 animal. 



Amount 



of plant 



fed. 



Date of feeding. 



Part of plant fed. 



650 



Pounds. 

 550± 

 700± 

 600± 

 500± 

 700 ± 

 550± 



Pounds. 

 12.5 

 18.5 

 21 



24.5 



2.5 



17.5 



1912. 

 June 28-29 



Leaves and stems. 



653 .. 



June 30-July 1 



Do. 



654 



July 23 





652 



August 8-9 





653 



August 30-31 . 





651 



September 3 



Do. 









No. of 

 animal. 



Time sick until able 

 to stand. 



Remedy used. 



Result. 



Amount 



fed to 1,000 



pomids 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 



Cabin corral. 



653 



654 



652 



653 



Arecolin, strychnin, 

 magnasium sulphate, 

 glycerin, and whisky. 



Physostigmin, pilocar- 

 pin, strychnin, luiseed 

 oil. 



Physostigmin, pilocar- 

 pin, and strychnin. 



Do. 

 Do. 



Do. 

 Do. 



651 









Do. 







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 DelpMnimn harheyi without any 

 effect. Another experiment was made, commencing on the morning 

 of August 24 and continuing until September 4. During this time 

 he ate 192 pounds, or, on the basis of 1,000 pounds of weight, 274.3 

 pounds. The feeding was then interrupted on account of storms. 



