DEATH CAMAS SPECIES, ZYGADE^NUS PANICULATUS. 



TYPICAL CASE OF CATTLE 863. 



Cattle 863 was a steer in good condition, weighing 457 pounds at 

 the beginning of the experimental feeding. It was brought into the 

 corrals on the afternoon of June 30, 1920, and received no feed before 

 the experimental feeding of Z. paniculatus was commenced. On July 

 3, at9 .50 a. m., it was fed leaves, stems, and young fruit of Z. panicula- 

 tus, and received an- 

 other feed at 5.15 p. 

 m. the same day. At 

 9.10 a. m., July 4, it 

 had eaten of the ma- 

 terial 1.109 pounds 

 per hundredweight of 

 animal, and refused 

 to eat more. At this 

 time there were no 

 definite symptoms of 

 toxic effect except the 

 refusal to eat. At 

 5.12 p. m. it was 

 found much salivated 

 and commenced t o 

 vomit. This vomiting 

 continued at frequent 

 intervals for about 

 one hour. Plate II, 

 figure 5, shows the 



animal in the act of vomiting. No further symptoms were noted 

 except the rather unusually low temperature of 99.9° F. at 7.25 a. m., 

 July 5. At this time the general appearance of the animal was good, 

 and it was turned into the pasture as practically recovered. Text 

 figure 4 shows the curve of temperature, indicating a depression as in 

 the other cases. 



ACCIDENTAL CASE OF HORSE 137. 



No experiments in feeding the plant to horses were made. An 

 accidental case, however, occurred which was of considerable interest 

 and should perhaps be recorded, since little definite evidence has ever 

 been obtained regarding the effects of Zygadenus upon this class of 

 animals. 



Horse 137 was one of the saddle horses used at the station. On 

 July 6, 1920, at 8.15 a. m., it was noticed that this animal was much 

 depressed and salivated, and saliva scattered about the corral 

 showed that this condition of salivation had continued for some time. 

 While this animal was a so-called gentle horse, it never readily per- 

 67283°— 22— Bull. 1012 2 



°F 



/OJ 

 /02 

 /O/ 



/oo 



99 



30 1 2 3 4 5 



























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A A 



L A 



h 











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f 



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V 



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Fig. 4. — Temperature curve of Cattle 863. 



