510 Journal of Agricultural Research voi.xx, No. 6 



All the experimental work was done with sheep. The cases differed 

 somewhat in detail, but on the whole they gave a fairly good picture of 

 the symptoms and effects. The symptoms were not so marked nor 

 the effects so striking as in some other forms of plant poisoning. 



Sheep No. 533 may be considered as a typical case. She was a ewe 

 that had been used in another feeding experiment by which no ill effects 

 were produced. She was in good normal condition and weighed 105 

 pounds at the time of the Daubentonia experiment. 



On July 25, 1919, at 11. 11 a. m. she was given by the balling gun 0.22 

 pound of ground seed per hundredweight of animal. No symptoms 

 were noted during the day or during the next morning, but at 3.25 p. m., 

 July 26, the pulse was rather rapid (104) and somewhat irregular. Two 

 hours later it was still more rapid (128) and the sheep showed distinct 

 depression. At 8.30 p. m. the pulse was 180, and the depression con- 

 tinued. This general condition continued with little change until 4.15 

 p. m., July 27, when she was down, groaning with each respiration but 

 still able to get upon her feet. The pulse was rapid and weak. At 

 5.12 p. m. the sheep was down, her breathing labored, pulse impercepti- 

 ble, and temperature 104.8 F. About an hour later, after no marked 

 change, she kicked a few times and died. 



The autopsy showed the heart in diastole, the lungs congested, more 

 or less inflammation in the fourth stomach, jejunum, ileum, and cecum, 

 the pancreas congested, and the blood vessels of the brain unusually full. 



SYMPTOMS 



The symptoms of Daubentonia poisoning are not very characteristic. 

 In very light cases of poisoning little except depression is noticed. This 

 is more marked in the severe cases. The pulse is rapid, sometimes 

 weak and irregular, and the respiration is usually labored. The tem- 

 perature in some cases was rather high, in one case being 104. 8° F. 

 This, however, would not be considered as necessarily abnormal. Diar- 

 rhea was a common symptom and may be considered as characteristic of 

 Daubentonia poisoning. Death occurred with little or no struggling. 



The experimental work showed that, in the animals which recovered, 

 the depression and diarrhea might continue for several days. In han- 

 dling sheep poisoned by Daubentonia it is important to recognize this fact 

 and to know that recovery is likely to be a slow process. 



DELAY IN PRODUCTION OF SYMPTOMS 



It is somewhat difficult to determine when the first symptoms of 

 Daubentonia poisoning are exhibited, as much depends on the acuteness 

 of the observer in detecting changes in the behavior of the animal. 

 Depression is the first real symptom, and it is not always easy to deter- 

 mine whether a sheep is slightly depressed. In determining the time 

 elapsing between the feedings of the plant and the appearance of the 

 first symptoms the estimate was made very conservatively, and the 



