Invasion of the Udder by Bacteria. 



293 



Groujp II. — In January, 1899, an opportunity was offered for 



the examination of two more udders in the manner ah'eadv 



t/ 



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 Bacteriologic Examination of 



Udder No. 7. 



