h.?:morrhagic septicemia in cattle. 719 



(7.) The bacillus was identified as belonging to the hfemorrhagic 

 septicFemia group of Hiippe, best specifically designated as B. hovi- 

 se2)ticus ; and besides causing haemorrhagic septicaemia in cattle (syno- 

 nyms — rinderseuche, buffleseuche, barbone, khounnaq, charbon blanc, 

 ghotwa, pasteurellosis bovina, etc.), closely resembles, if, indeed, it 

 is not identical with, the bacilli causing wildseuche, swine plague, 

 schweineseuche, rabbit septicaemia, chicken cholera, grouse disease, 

 duck cholera, etc. The organism was studied in direct coverglass pre- 

 parations, parallel cultures in and on various media, and by inoculation 

 of animals in which the characteristic lesions were reproduced, and 

 from the tissues of which the inoculated bacilli were recovered in pure 

 culture. 



(8.) An attempt was made to immunise cattle by the injection of 

 filtered, and later of the killed, cultures of the bacillus. The chief 

 difficulties met with were in maintaining the virulence of the bacillus 

 on artificial media, and in determining the proper dosage. The 

 experiments were too few, and the results not sufficiently tested to 

 warrant conclusive statements as to the protective value of the in- 

 oculations, but it would appear that a fairly high degree of immunity 

 was produced. 



(9.) The prompt removal of the dead animals and isolation of sick 

 ones, accompanied by thorough disinfection by fire, carbolic acid, 

 corrosive sublimate, and freshly-slaked lime, apparently served to 

 check each outbreak within a short time after the measures were 

 instituted. 



