OAK-LEAF POISONING OF DOMESTIC ANIMALS. 
19 
into pasture, where it was kept under observation until September 28. 
During tins time it gained in weight and regained its normal con- 
dition. 
No. 772, a steer, was fed' with No. 765. By July 22 it had lost its 
appetite and was much constipated, its feces being not only hard 
but also containing blood and mucus. It had progressively lost 
weight from the beginning of the feeding. Its pulse became weak in 
the succeeding days, its eyes sunken, the nose dry, and the animal 
became very weak and was lying down most of the time. A little 
hay was given it, but it gradually grew worse, the feces became 
more liquid, and contained much blood and mucus. The pulse 
became indistinguishable, and it died on the morning of July 27. 
At the autopsy dark, hemorrhagic areas were found on the peri- 
cardium and the surface of the heart. There was some peritoneal 
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Fig. 12. — Weight curve of cattle No. 751, fed oak and 3 pounds of alfalfa hay per day from Aug. 21 to Sept. 9, 
1917. 
inflammation but no adhesions. Congestion was present in the 
duodenum, the anterior part of the jejunum, the ileum, and the 
rectum. The large intestine showed slight congestion. The liver 
appeared abnormally fibrous, the gall bladder was filled with gelati- 
nous bile; apparently the bile was dammed up, as there was no 
evidence of bile in the duodenum. The history of the animal showed 
no marked abnormalities in the temperature or the rates of the pulse 
and respiration. It should be noted that this animal died after 
feeding upon oak only 13 days. 
Two steers, Nos. 751 and 760, were fed oak leaves from August 2 
to September 9. With the oak each was given 3 pounds of alfalfa 
hay daily. These feedings were to check up the 1916 experiments 
with cattle Nos. 703, 704, 722, 723, and 731, in which alfalfa hay 
was fed with the oak, with no resulting ill effects from the oak feed- 
ing. Figures 12 and 13 show the curves of weight of Nos. 751 and 
760. It will be seen that they were practically at a standstill during 
the period of the experiment. No symptoms of ill effect were noted, 
however, other than failure to make the gain which would be ex- 
pected at that time of the year. 
