RFTORT ON DOURINE. 



in mares and at least one stallion dealt with in the course of this 

 iiiijuiry, while the other attacked all the animals utilized indiscri- 

 minately. The first to make its appearance was an infectious sexual 

 disease known as Vehicular Exanthema of horses which occurs in 

 some countries in epizootic form. Severe cases of this disease were 

 formerly the frequent cause of Vesicular Exanthema being mistaken 

 for Dourine. The second form has not before been recognized in 

 horses in the East, viz., Pyroplasmosis. The organism found in 

 the red corpuscles of affected equines is akin to, but not identical 

 with, that which produces hsemoglobinuria in cattle generally known 

 as Texas fever. In the attached Appendices will be found a brief 

 summary of each case of spontaneous and experimental Dourine in 

 equines, together with the symptoms of Vesicular Exanthema as 

 they appeared in each case respectively, but at the end of the report 

 a short account dealing with each of the secondary diseases encount- 

 ered, viz., Vesicular Exanthema and Pyroplasmosis, has been inserted 

 for information. 



Section II PRECIS OP CASES. 



Spontaneous or naturally contracted Dourine in Stallions. 



A. Gates observed at the Babugarh Dep6t on July 26th, 1901. 

 Quarter, Arab. An Arab stallion, aged 8 years, on the 4th 

 November 1896. This animal was sent to a stand at Kakrana on 

 the 25th January 18Q7, and continued in good health until January 

 1900, when it was brought back to the depot for treatment. It 

 then exhibited swelling and oedema of the sheath and hind limbs, 

 which was considerably reduced after exercise. In April 1900, 

 after a short course of treatment, the animal was sent back to the 

 district, but had shortly to be returned to the dep6t for rest and 

 treatment. On this occasion the horee was submitted to a course 

 of tonics aud Arsenic, but not the slightest good effect was observed. 

 The temperature during this long period ranged between a mini- 

 mum of 99'8F. and a maximum of 108'2P. There was a history, 

 since the 27th April 1900, of numerous plaques having appeared at 

 intervals of 15 to 20 days ; these persisted for several days and then 

 disappeared, leaving the hair on the affected area of a lighter colour. 



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