134 VERMONT AGRICULTURAL REPORT. 



Many of the cattle coming into the state by permit have 

 been allowed to enter and be tested upon their arrival at the 

 premises of the owner with the understanding that if any re- 

 sponded to the test they must be returned to the place from 

 whence they came. This has been allowed, in the belief that a 

 more satisfactory test could be secured by employing Vermont 

 veterinarians than those outside the state. 



Cattle come in to pasture more or less every season from 

 all borders of the State except the northern boundary. Forty- 

 six pasture permits have been granted, admitting about 1400 

 head for the season. No test has been required for these 

 except for some coming from the stockyards in Massachusetts. 

 A careful description of every lot is required, giving the num- 

 ber of head, breed, color, age, owner's name, name of the 

 town where the pasture is located and the owner thereof, and 

 also a promise that they shall not be kept in pasture with state 

 cattle. Exception has been made where a party is owner of 

 land on each side of state line, in which case permission has been 

 given the owner to drive his own cattle back and forth at will. 



THE TUBERCULIN TEST FOR TUBERCULOSIS. 



Some cattle owners doubt the value of tuberculin as a means 

 of pointing out the disease, while many others try to think 

 it injures the animal. For this reason, the following excerpt is 

 made from the year book of the Department of Agriculture. 



THE PREPARATION AND USE OF TUBERCULIN. 



By E. A. de SchwEinitz, Ph. D., M. D., Chief of Biochemic 

 Division, Bureau of Animal Industry. 



INTRODUCTION. 



Tuberculin is a solution in glycerine and water of the pro- 

 ducts of the growth of the tubercle bacilli upon artificial media 

 and the contents of their cells. Although it has been manu- 

 factured in quantity and used upon a large scale for some years, 

 it may at the present time be of interest to give a brief sketch 

 of the methods of manufacture of this material as followed in 

 the Biochemic Division, and to note the advantages or objec- 

 tions to its use as a diagnostic agent for tuberculosis in animals 

 and men. 



