eas 
DEATH CAMAS SPECIES, ZYGADENUS PANICULATUS. nal 
Temperature.—In the experimental work of 1919, Cattle 826 was 
the only case in cattle that showed a depression of temperature. Of 
the 4 sheep, 3 had a low temperature. In 1920, the 5 head of cattle 
exhibited a lowered temperature, and of the 13 sheep all but 2 showed 
the same effect of the plant. In 1921, 4 of the 6 sheep had a lower 
temperature. This condition of temperature was distinct, but ordi- 
narily the temperature was not very low. The lowest was 98.4° F., 
~ which was noted in two cases. One observation of 98.8° F. was 
made, two of 99° F., and one of 99.6° F. More commonly the 
temperature did not go below 100° F. and could not be considered 
as distinctly subnormal. There was, nevertheless, in most cases, a 
definite lowering of temperature. This is shown in the temperature 
curves of Sheep 602, Sheep 569, and less markedly in Cattle 863. In 
the case of Sheep 569 a number of temperatures were recorded besides 
those of morning and night shown in the diagram, but these addi- 
tional observations did not alter the character of the curve. 
In the work carried on at Greycliff, Mont., on the Zygadenus which 
is stated in Bulletin 125 to be Z. venenosus, and which we are now 
informed was Z. gramineus, it was noted that a depression in tem- 
perature sometimes appeared when no other symptoms were seen. 
It was questioned whether the same phenomena might not occur in 
the cases receiving Z. paniculatus. The only case of this character 
was Sheep 594, which in 5 days, receiving 2.105 pounds, had no 
noted symptoms except a lowering of temperature. 
In the discussion of the Montana work, in Bulletin 125, the state- 
mens was made that a low temperature could hardly be considered 
as diagnostic of Zygadenus poisoning. The additional work which 
has been carried on with Z. paniculatus shows that while one or a 
few observations are not diagnostic, if a fairly complete record is 
made after the feeding of the plant to the animal, this record when 
plotted is pretty certain to indicate whether any toxic effect has 
been produced. 
Pulse.—The pulse rate in the sick sheep varied from 52 to 220. 
The rate of 220 was shown by Sheep 644, which had pneumonia. 
In the sick cattle it varied from 48 to 210. This latter figure, how- 
ever, was observed in an excited.animal before the feeding of the 
plant. The highest: rate after the feeding of the plant was 84. In 
2 or 3 of the sheep the pulse rate was slightly higher during the de- 
pression of temperature, but in most cases the curve of the pulse 
followed rather closely the curve of temperature, being low when 
the temperature was low and rapid when the temperature was high. 
In some cases it was weak and in some intermittent. 
Respiration.—There was some irregularity in respiration, but in 
general the rate of respiration varied, much like that of the pulse. 
It was noted in Bulletin 125, in regard to Z. gramineus, that there 
