28 



producing a frothy mixture which would be expelled with the next 

 effort. 



So characteristic was this symptom that an effort was made to pro- 

 cure a picture of an animal in tliis act, but without success. 



The symptoms enumerated would gradually verge into symptoms 

 indicative of paralysis and insensibility. The animals would fall 

 and make frequent attempts to rise and after severe convulsive strug- 

 gling would die. 



With those animals in which the developing sj'mptoms indicated 

 greater depression and dullness instead of a disposition to remain 

 active, there was a desire to stay quiet and recumbent with the nose 

 resting upon the floor or the head thrown around on the side. There 

 would, in such cases, be intervals of greater activity marked by ele- 

 vation of the head and ears, protrusion of the eyes, attempts to rise, 

 loud and frequent bellowing, switching of the tail, kicking and fre- 

 quent spasmodic strainings. These periods of excitement and rest- 

 lessness lasting from one to several hours would be followed by 

 intervals of quiet with progressive symptoms of paralysis and insen- 

 sibility. After a time the patient would become comatose and remain 

 in that condition until death. In some instances the hopes of recov- 

 ery were so small, the symptoms so urgent and distressing and the 

 animals apparently in such pain that they were relieved of their suf- 

 fering by slaughter. (Four animals in lot No. 2. See table.) 



