118 VACCINE AND SEKUM THERAPY 



to be used, as a homologous serum is often more 

 effective. 



Enzootic Spinal Paralysis of Equines.— This is, 



as a rule, an acute infectious disease of equines, 

 characterised by multiple capillary hemorrhages in 

 various organs, and especially in the spinal cord. 

 The special clinical feature is paralysis of the posterior 

 parts. 



Etiology. — A specific streptococcus, the Streptococcus 

 melanogenes of Schlegel. 



This disease is very common, occurring in an 

 enzootic form, and very often attacking in-foal mares 

 in poor condition. In the acute form the mortality 

 from this disease is as high as 98 per cent. 



Treatment. — So far a specific antiserum has not 

 been prepared from the causal organism, but if such 

 a serum was obtainable it should give good results, if 

 given intrathecally, in the treatment of this disease. 

 In the absence of this specific serum normal horse 

 serum should be employed. This should be given 

 intrathecally, after first withdrawing the cerebro- 

 spinal fluid by lumbar puncture. The modus operandi 

 here is the same as that described under Tetanus. 



Various Chronic Affections due to Pyogenic 

 Bacteria. — There are numerous conditions existing in 

 a chronic form which yield to vaccine treatment. In 

 all these cases best results are obtained from the use 

 of autogenous vaccines, in conjunction with local 



