REPOKT ON DOUEINE. 



disease on the lips, mouth and on the m. m. of the nose and eyes. 

 One attack confers no immunity, for an animal may recover and 

 become again infected within a period of a few weeks. The disease 

 is transmissible from animals to men, especially to the hands of 

 attendants, in a form which resembles small-pox. The patient 

 always makes a rapid recovery. 



Precis of Cases. 



Mare II. Australian mare, aged . On 7th May 1903, during 

 a period of O3strum, this animal was covered by an Arab stallion 

 Yadgir, for a long period the subject of latent Dourine. A< sore 

 was observed to exist over the root of the free portion of the penis 

 while covering. No symptom occurred until the morning of May 

 16th (10th day after covering), when a small ulcer was observed 

 inside the left labium of the vulva, and twenty-four hours later 

 fresh vesicles were noted, each surrounded by a halo red in colour, 

 while there was an eruption of successive crops of vesicles which 

 later formed ulcers and then disappeared. On the morning of the 

 27th all signs had disappeared. 



Mare V. A New Zealand mare, aged 7 years, was covered by 

 an Arab stallion fadgir (suffering from Dourine) on the llth and 

 18th May 1903. The horse presented a small sore on the anterior 

 and superior surface of the free portion of the penis. A vesicular 

 eruption appeared on the external genital organs of the mare on the 

 21st May ; by the 23rd these had formed ulcers from which a sticky, 

 viscid fluid exuded, which dried and formed a film over the surface 

 of each individual ulcer. Marked swelling of the -external genitals 

 followed. The primary symptoms persisted until the 5th June, 

 when the dry films commenced to loosen at their edges and later to 

 separate ; they then disclosed patches destitute of pigment (leuco- 

 derma) on the site previously occupied by each ulcer. 



Mare 721. 'A. country-bred mare, aged 4 years, was covered 

 during a period of oestrum by an Arab horse Monarch on the 80th 

 June and 3rd July 1903. At the time of serving the mare on the 

 first occasion, the penis of the animal was clean and free from any 

 sores and no symptoms followed the union iu the mare during the 

 next 72 hours. After the second serving, small ulcers were observed 



