Aug. IS, 1919 



Bacterium abortus Infection of Bulls 



241 



The agglutination reactions of the animals appear in the following 

 table. 



Table I. — Results of agglutination tests 



Animal No. 



86. 

 88. 

 89. 

 98. 

 103 



105 

 109 



^33 

 134 

 136 



137 

 143 

 146 



147 



150 

 154 

 165 



Animal No. 



177, 

 178, 

 179, 

 189, 

 198, 

 265 

 271 

 280 

 301 



326 

 338 

 348 

 409 



451 

 453 

 454 



Suspected serixm. 



0.04 cc. 0.02 cc. O.OI cc. 0.005 cc. 



+ 



SI 



+ 



SI 



4- 

 + 



+ 

 + 

 SI 

 + 

 + 

 SI 

 SI 



+ 

 + 

 + 

 + 



SI 



SI 

 SI 

 SI 



+ 



SI 



+ 



SI 

 SI 

 SI 



+ 



SI 



+ 

 + 



SI 



+ 



SI 



SI 

 SI 



SI 



+ 

 + 



SI 

 SI 



+ 



+= Complete agglutination. 



— =No agglutination. 



Sl= Partial clumping of bacteria. 



EXAMINATION AND FINDINGS OF BUI.Iv 88 



February 12, 1918. Agglutination test: 0.04 cc.4-, 0.02 cc. + , o.oi 

 cc. + , 0.005 cc. SI. 



February 14, 1918. Slaughtered. 



Macroscopic examination. — Fluid of left seminal vesicle turbid in 

 appearance and slightly more excessive in amount than that contained 

 by other organ. No indication of abnormal conditions noted elsewhere. 



Bacteriological findings. — Of the 16 tubes of medium inoculated 

 from the various organs enumerated, after four days' incubation three 

 tubes developed from 40 to 60 colonies of an organism suggestive of 

 Bad. abortus and subsequently identified as such. These inoculations 

 were from the left seminal vesicle. 



EXAMINATION AND FINDINGS OF BULL 98 



March 8, 191 8. Agglutination test: 0.04 cc. + , 0.02 cc. + , o.oi cc.4-, 

 0.005 cc. SI. 



March 9, 191 8. Slaughtered. 



Macroscopic examination. — Marked pathological changes involved 

 the left seminal vesicle. The organ was increased from 8 to lo times 



