44 STRANGLES 



Van de Velde, in a very exhaustive series of experiments, 

 showed that an antitoxin produced from one streptococcus will 

 not immunize against another, save to a verj' slight degree. 

 Better results are reported by the use of polyvalent serums. 

 There are a number of acute local disorders, such as 

 vaginitis in cows, that have been attributed to this genus. 



REFERENCES. 



1. Klein. Seventeenth Annual Report of the Local Governtnent 

 Board. Supplement containing report of Medical Officer. London. 

 1887, p. 256. 



2. KuRTH. Arbeiten a.d. Kaiserlichen Gesundhcitsauite,'2>^. VII 

 {1891), S. 389. 



3. MooRE. Bulletin No. J. U. S. Bureau of Animal Industry, 

 1893, p. 9- 



4. Pasquale. Beitriige zur path. Anal. u. zur allgeineinen 

 Pathologie, Bd. XII (1893), vS. 433. 



5. Petruschky. Zeitschrijtf. Hygiene, Bd. XVII, S. 59. 



6. VON LiNGELSHEiM. Zeitschrift f. Hygiene, Bd. X (1891), 

 S. 331- 



7. Welch. The Atner. Jour, of Med. Sciences, VoL CII (1891), 

 P- 439- 



STRANGLES. 



Synonyms. Adenitis equorum ; Coryza contagiosa 

 equorum ; Distemper : Gourme ; Druse. 



§ 22. Characterization. Strangles is an infectious dis- 

 ease of horses, asses and their hybrids occurring sporadically 

 and in epizootics. It is characterized principally by a fever, 

 followed by an acute catarrh of the mucosa of the upper air 

 passages especially of the nares, and a suppurative inflamma- 

 tion of the lymph glands of the submaxillar}- and pharyngeal 

 regions. The lesions, however, are not restricted to these 

 parts. It is a disease of young animals. 



v^ 23. History. Strangles was among the first equine 

 diseases to be recognized. In 1664, Solleysel gives an account 

 of it and points to the fact that it had been known for a long 



