EQUINE PLEURO-PNEUMONIA 49 



2. Poles. Die Mikrokokken der Druse des Pferdes. Fortschr. 

 der Med., Bd. VI (18S8), S. 4. 



3. Reeks. Intracranial strangles, abscess in a mare. Jour. 

 Compr. Path, and Thera., Vol. XII (1899), p. 178. 



4. Saxd and Jensen. Die Aetiologie des Druse. Deutsche Zeit. 

 fur Thiermed., Bd. XIII (18S8), S. 437. 



5. ScHLTTz. Der Streptococcus der Druse des Pferdes. Arc/i. fur 

 Thier/ieilkunde, Bd. XIV (1888), S. 172. 



EQUINE CONTAGIOUS PLEURO-PNEUMONIA. 



Synonyms. Pleuro-pneumonia contagiosa equorum ; stable 

 pneumonia; pneunioenteritis; Bnistseiiche. 



§30. Characterization. This disease known as conta- 

 gious pneumonia or contagious pleuro-pneumonia in the horse 

 is characterized by a high temperature, rapid pulse, but occa- 

 sionalh^ without definite lung disturbances. Like strangles, 

 both the symptoms and the lesions vary to such a degree that 

 it is difficult to single out diagnostic features. 



§ 31. History. In earlier times, influenza and conta- 

 gious pleuro-pneumonia of the horse were not distinguished as 

 separate diseases. Falke differentiated the disease formerly 

 known as influenza into contagious pleuro-pneumonia and 

 influenza. Since his time they have been recognized as dis- 

 tinct diseases. 



^^ 32. Geographical distribution. Contagious pneu- 

 monia, like strangles, is widely distributed. It appears in epi- 

 zootic form, although in certain places it is reported to be 

 almost enzootic. It prevails most extensively where large 

 numbers of horses are congregated. It has frequently been 

 reported as the cause of much trouble among the horses in the 

 European armies. In the eastern part of the United States, it 

 appears from time to time in more or less serious epizootics. 

 It is quite common among horses shipped from the West. In 

 these cases, it is designated as "vv'cstern" or "stable" fever. 



