86 VACCINE AND SEKUM THERAPY 



white scour from eight dairy farms where the disease 

 was very prevalent. The disadvantage of this method 

 is the preparation of a different vaccine for each 

 different farm, but the results obtained far out- 

 weigh this. 



Pyosepticemia of Sucklings (Joint 111, Navel 



111).— Joint ill of sucklings is an acute, sometimes 

 chronic, contagious infectious disease of the newly 

 born animals, generally occurring in the first few 

 days of life. It is characterised by purulent in- 

 flammation of the joints and general pyemic mani- 

 festations. In some very acute cases the manifestations 

 are septicemic. It develops in some cases as a result 

 of umbilical infection, occasionally as an intestinal 

 infection, and commonly as an intra-uterine infection 



of the foetus. 



Etiology,— In foals the following organisms are 

 accountable for the disease : 



1. Streptococci; these bacteria cause about 50 per 

 cent, of joint- ill cases. 



2. B. nephritidis equi, 21 per cent. 



3. Organisms of the B. coli cominunis type, 21 per 



cent. 



4. Miscellaneous organisms, chief of which is the 

 B. ahortivo equinis, 5 per cent. 



In calves the causative agents are chiefly : 



1. B. bipolar is septicus. 



2. B. coli communis. 



In the latter animals joint ill and white scour are 



