56 



BTJLLETIlsr 365, U. S, DEPAETMENT OF AGEICULTUEE. 



SO much larger than that necessary to poison cattle, it was deemed 

 conclusive evidence that the plant at this stage is not poisonous to 

 sheep. 



Table VIII. — Summary of feeding experiments upon sheep loitJi Delphinium 



barbeyi, 1910 and 1911. 



No. of 

 animal. 



Weight of 

 animal. 



Amount 



of plant 



led. 



Date of feeding. 



Part of plant fed. 



Amoimt 

 fed to 100 



pounds 

 ofanimal 



weight. 



Location 



from which 



plant fed 



was 

 obtauied. 



lis 



Pounds. 

 97 



90 

 65 

 94 

 93 



140 

 136 



Pounds. 

 67.75 



68 



31.75 

 104 

 121 



49 

 37 



1910. 

 June 3-22 



June 23-July 5 . 



Leaves and stems 



Pounds. 

 69.9 



75.5 



48.8 



110.6 



130.1 



35 



27.2 





104 



do 



tion. 

 Do. 



114 



do 



do 



Do. 



108 



116 



July 6-17 ...... 



do 



Leaves, stems, and flowers — 

 do 



Do. 

 Do. 



134 



1911. 



June 17-25 



do 



Leaves and stems 



Do. 



135 



do 



Do. 











EXPERIMENTAL FEEDING OF DELPHINIUM MENZIESII TO SHEEP IN 1910. 



Four sheep weighing approximately" 100 pounds each were fed 

 various quantities of Delphinium menziesii. Table IX gives a sum- 

 mary of these experimental feedings. 



Sheep 113 was fed 32.75 pounds of roots, the feeding continuing 

 from June 2 to June 13. On June 13 the available supply of roots for 

 feeding was exhausted and the sheep was given the tops, including 

 leaves and flowers. This feeding was continued through June 22, 

 the animal having received, altogether, 50.25 pounds of this material. 

 Sheep 125 was fed 111.75 pounds of tops, including leaves, stems, and 

 flowers, the feeding continuing from June 2 to June 16. Sheep 119 

 was fed from June 15 to June 26, the material being the entire top, 

 including leaves, stems, flowers, and seeds. During this time the ani- 

 mal ate 101 x)Ounds, or very nearly its own weight. During the 

 same period, June 15 to June 26, sheep 123 was fed 73.75 pounds of 

 the same material. . 



The Delphinium m^enziesii fed to sheep 113 during the first experi- 

 ments of root feeding was collected near the camp. All the rest of 

 the material fed to the sheep was collected at Pass Creek Park and 

 was of fairly mature plants. The feeding of this plant to sheep pro- 

 duced no injurious effect whatever. The animals did not even lose 

 much in weight, and that little could be accounted for by reason of 

 confinement and the fact that they were being fed but a single 

 variety of plant. 



It should be added that sheep 160 ate in one day, on the basis of 

 100 pounds of weight, 5.98 pounds, and sheep 177, 6.9 pounds. In 

 the experiments of 1910 and 1911 sheep 118 ate in one day 6.7 pounds; 

 sheep 111, 6.5 pounds; sheep 135, 7.4 pounds; sheep 131, 7.8 pounds; 



