ON 



DOORINE IN DIFFERENT BREEDS OF EQUINES. 



Section I INTRODUCTION. 



FROM observations made during one of my tours in the autumn 

 of 1898, I came to the conclusion that certain symptoms 

 exhibited by. a country -bred mare pointed to the fact that she 

 might be the subject of covering disease. Consequently, on my 

 return from sick leave, I prosecuted enquiries with regard to the 

 existence in India of the above-mentioned malady, and in my letter 

 No. 271, dated 2 1th April 1900, to the Secretary to the Director- 

 General, Indian Medical Service, requested that information might 

 be forwarded to me with regard to the occurrence of a disease in 

 stallions and mares known under the name of Dourine or ' Mai du 

 Coit/ 



The Department of Revenue and Agriculture, in their letter 

 No. 815-76-2, dated the 9th June 1900, signified the following 

 order: "The necessary instructions have been issued to the In- 

 spector-General, Civil Veterinary Department, and the Principal 

 Veterinary Officer in India to keep Dr. Lingard informed, from 

 time to time, of the occurrence of any case or cases of a certain 

 disease ' Dourine ' allied to Surra, as well as any information that 

 may be obtainable concerning them." 



The first case recognized by me was that of a stallion Quarter 

 Arab at Babugarh in July 1901. Inoculation experiments con- 

 ducted on small animals, in the absence of equines, with blood from 

 the plaque and from the general circulation proved negative, but 

 useful photographs were secured of an animal in the second stage 

 of the disease showing the eruption of plaques. As the Bareilly 

 Depot had at that time not been taken over, and there existed no 



