VETERINARY PROBLEMS. 31 



Can you tell us what are the symptoms of that disorder? 

 Dr. Salmon. The symptoms of Texas fever are a droop- 

 ing of the head, a lopping of the ears, general weakness, 

 stasfoferinff gait in walkina^, with hgematuria, with hiojh fever, 

 death resulting in the course of three days to a week. There 

 is scarcely any other disease which can be mistaken for this, 

 or which can be confounded with it, for the reason that the 

 only other disease which assimilates very closely to it is the 

 well-known anthrax. Animals affected with that disease die 

 in from twelve to twenty-four hours. There is a disease 

 which occurs in the spring, principally, but sometimes in the 

 fall, which is caused by animals eating of the green and 

 early shoots and buds of evergreen trees, and some of the 

 plants which start early in the spring, which causes symptoms . 

 somewhat similar to those of Texas fever ; but the time of 

 the yeffr when this occurs is sufficient to distinguish between 

 the diseases, for Texas fever is seldom if ever seen in any 

 other months than July, August, September and October. 

 It is true that when the Texas cattle disease is carried a con- 

 siderable distance from the district wdiich is permanently 

 infected with it, the infection dies out the first winter which 

 succeeds ; but the district which is permanently infected 

 with the Texas fever is advancing further and further to the 

 north and northwest ; and I think it has passed the line of 

 frost and snow, and passed the line where the temperature 

 falls as low as six, and sometimes ten, degrees below zero 

 nearly every winter. The infection in those lands in some 

 way continues, cattle sicken upon them, herd after herd, 

 and it seems almost impossible to rid them of this infection 

 when once it has advanced over the line in this way. When 

 it is carried a. considerable distance beyond the permanent 

 line, as I say, the winter seems to kill out the infection. 

 But the whole border-line is infected, and as the disease ad- 

 vances, slowly but surely, the infection remains where it has 

 gone, and remains in places where the temperature goes be- 

 low nine or ten degrees below zero, and has remained there 

 for five or six years, in some cases. 



Question. Will you tell us how it is that the infected 

 districts do not become depopulated of cattle, and how it is 



