82 REPORT <?N DOURINM. 



interval of over thirteen weeks then elapsed without any having been 

 observed. The animal was transferred from the plains to the hills 

 during the first week of April. On the 3rd morning after arrival 

 from a march of 28 miles, the 76th plaque was noted, and No. 77 

 after further interval of nearly 7 weeks. At the time of writing, 

 October 15ch, 1901, no symptoms have developed during a period 

 of 4| months. Temperature remained within normal limits. 



Present condition : 18th October 1904. Condition good. 

 Slight oedema of belly. No leucoderma. Vulva normal. 



Mare VIII. On the 20th October 1903, plaque No. 19 

 appeared and persisted for a period of 18 days. Between the above 

 dates and May 19th, 1904, no cutaneous lesions were noted, but on 

 the following day No. 20 plaque appeared and on the 12th June 

 No. 21, since which latter date no further plaques have become ' 

 manifest, Temperature remained within normal limits. 



Present condition : 18th October 1904.= No. osdema, two 

 white spots. Vulva swollen. ' No plaques. Losing condition. 



Inoculated with 20 c.c. of blood drawn from the jugular 

 vein of Monarch on the 15th December 1903, Animal pregnant. 

 The last note on 29th February 1904, no symptom of Dourine 

 was present. On the night of the 10th May, a healthy foal was 

 born; no complications. On the morning of the 18th May there 

 was a slight rise of temperature 39C. ; next morning it registered 

 40-2 C., and on the morning of the 20th, 40'4C. There was 

 swelling of the near fore-knee which was hot and tender. These 

 symptoms increased from the 18th to the 20th May and persisted 

 until the 13th June. Between the 24th and 30th May, three 

 plaques appeared on the cutaneous surface of the chest a,nd abdo- 

 men measuring from 1 to 3 inches in diameter. These persisted for 

 7, 4, and 3 days respectively. No variations in the temperature 

 from the normal were noted. 



Present condition: October 18th, 190-1. Swelling of right 

 labium. Good condition. Foal good condition. No symptoms 

 of Dourine noted. 



This experiment demonstrates the fact that the Dourine 

 trypanosoma or its immature form was present in the blood of the 

 Arab stallion during the intermission of eruption of plaques bet- 



