Invasion of the Udder by Bacteria. 



293 



Groiijp IL — In January, 1899, an opportunity was offered for 

 the examination of two more udders in the manner already 

 described. During the examination of the gelatin plate cultures 

 two apparently different colonies were distinguished as predominat- 

 ing. Sub-cultures were made from these, but were lost before they 

 were compared with the three cultures from the preceding exami- 

 nation. Nevertheless a tabulation of the results from an examina- 

 tion of the growth upon the gelatin plates will be of interest in its 

 bearing on the subject of the general invasion of the normal udder 

 by bacteria. Species No. 4 is a bacillus liquifying gelatin. Species 

 No. 5 is probably identical with No. 2. 



TABLE No. YI. 



Summary of Results of the Bacteriologio Examination of 



Udder No. 7. 



