POISONOUS PROPERTIES OF THE WHORLED MILKWEED. 5 



achs appeared normal. There was some gas in the jejunum and 

 ileum, and congestion in the posterior part of the ileum. The liver 

 was pale and blotched, and the gall bladder was distended with gas. 

 Tapeworms were present in the bile ducts and in the pancreatic duct. 

 There were hemorrhagic spots on the surface of the thymus. The 

 brain and spinal cord appeared normal. 



The results of microscopic examination of the tissues are given on 

 pages 7 to 10. 



SYMPTOMS. 



The most prominent symptom in all the cases of poisoning was a 

 weakness of the hind quarters of the animals, which resulted in a 

 staggering gait. There was in most of the cases depression and in 



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-Temperature curve of Sheep' 547. 



some evident trembling, but the staggering was universally present 

 and was particularly noticeable. This was not due in most cases to 

 extreme weakness, for the animals could get about quite readily, but 

 appeared in a gait which reminded one very much of a drunken man. 

 This symptom of staggering was one which in some cases continued 

 for several days. The pulse generally was weak and rapid, and the 

 animals which were quite sick frequently accompanied the expira- 

 tions with a grunt or a groan. In the cases which recovered there 

 was no bloating, salivation, or spasm. It was quite noticeable in 

 many of the cases that the animals when standing held the head 

 high and the nose extended forward in a very characteristic fashion. 

 In the animals which were fatally poisoned, in addition to the symp- 

 toms already described, there was some bloating and salivation, and 



