BUREAU OF ANIMAL INDUSTRY. 525 



which are not permanently infected, it seems to be the only way in 

 which a line can be drawn which will give a correct idea of the northern 

 boundary of the infected district. 



INDIAN TERRITOKY. 



The facts that we have bisen able to collect in regard to Soutlieni 

 fever in the Indian Territory are mostly in regard to instances of llic 

 occurrence of this disease in the northeastern part of the Territory , 

 principally in the Cherokee and Creek Counties. Owing to the promis 

 cuous driving of cattle through this section, it has been very difficult 

 to get exact information as to the cause of the disease in many of Ibc 

 cases. Sufficient observations of a definite nature have been recorded, 

 however, to show that the line of infection continues in a northwesterly 

 direction from the northwest corner of the State of Arkansas, until it 

 reaches to within 12 or 15 miles of the Kansas State line, at a point 

 nearly south of Chetopa. Its direction is then westward across the 

 Cherokee country and nearly half way across the Osage country. It 

 then takes a southwesterly direction to the Texas State line, crossing 

 the country of the Kiowas, Comanches, and Aprches. 



At the Ponca Agency the native cattle are subject to infection from 

 cattle from farther south, and Kansas cattle which are taken to Ponca 

 Agency do not contract Southern fever unless ex])osed to the infected 

 cattle. The same appears to be true of nearly all of the territory em- 

 braced in the Cherokee outlet. In the southern part of the Osage coun- 

 try, and in all of the Creek country, cattle imported from ISorthern 

 States are almost certain to contract this disease, while the native cat- 

 tle mix with impunity with the Texas cattle. 



It is reported as the general experience of stockmen in Arkansas and 

 the Indian Territory, that long drives and close herding of cattle that 

 are from the infected district, and are not usually susceptible to the 

 disease, is an exciting cause of this malady, and large numbers of such 

 animals sicken and die during such drives. This has been particularly 

 noticed with cattle from Southeastern and Eastern Arkansas which have 

 been driven from there into the Indian Territory. These cattle, though 

 undoubtedly from an infected section, contract Southern fever during 

 their journey, or soon after their arrival in the Territory, and many of 

 them are lost from its effects. Facts of this same nature, observed in 

 other sections of the country, have been referred to in former reports. 



TEXAS. 



For more than a year we have been collecting information in regard 

 to the occurrence of Southern fever in the State of Texas, and such other 

 data as would serve to indicate the extent of the district which may be 

 considered as permanently infected. The lines of evidence to which we 

 have directed our attention are similar to those which have already becji 

 mentioned in our investigation of this matter in other States, and for 

 the information of those who are particularly interested in this question, 

 as it applies to Texas, I would state that there are six. classes of facts 

 which serve as a basis of deciding this question. All of these are based 

 on the three well-established conclusions, (l^that cattle from the per- 

 manently infected district which are taken beyond this district, and 

 where the infection does not exist, contaminate pastures, and in that 

 way disseminate the disease among the native cattle in the non-infected 

 district; (2) that cattle from the non-infected district which are taken 



