568 ON MICRO-ORGANISMS IN TISSUES OF DISEASED HORSES, 



horse-diseases known under the terms of "epizootic cellulitis," 

 " rheumatic influenza," " pinkeye," " purpura haemorrhagica," 

 "epizootic pneumonia," it difiers from all of them considerably. 



" The disease shows a disturbance of the vascular system, with 

 alterations in the character of the blood which cause obstructions 

 in the capillary vessels, followed by haemorrhagic spots, accom- 

 panied by organic complications, more or less severe." 



The characteristic symptoms are : rapid pulse and breathing, high 

 body-temperature, highly inflamed eyes, swollen head and limbs, 

 rapid loss of flesh, associated with great debility. 



Mild forms of the fever occur ; convalescence after severe attacks 

 progresses very slowly. The mortality was about 10 to 15 per 

 cent, during the inquiry. 



About the period of incubation the report says : — " From the 

 time of exposure to infection, from three days to three weeks " 

 (that means to say, as I understand it, from the moment of expo- 

 sure, which may in a number of cases cover the moment of infection, 

 till the first symptoms are discovered). 



The pathological anatomy is as follows : — 



" Hfemorrhagic spots and stellate patches of inflammation are 

 difl'used over both serous and mucous surfaces, effusions of serous 

 lymph, and adhesive inflammation of the coverings of the lungs, 

 heart, liver, and spleen ; also serous efiusions into cellular tissues 

 of the limbs and head. In fatal cases, the inflammation is so 

 intense as to obstruct the circulation ; local mortification is speedily 

 followed by death." 



Post mortem examinations were made on four cases, with the 

 following result : — 



1. "Coach horse. Putrid lungs." 



2. " Teamster's hack. Pleuritic inflammation and gelatinous 

 effusion covering the pei'icardial sac ; also slight enlargement and 

 inflammation of the spleen." 



