Bulletin 178. January, 1900. 



Cornell University Agricultural Experiment Station, 



ITHACA, N. Y. 



DAIRY DIVISION. 



The Invasion of the Udder 



by Bacteria. 



COLONIES OF BACTERIA IN A GELATIN PLATE CULTURE FROM AN UDDER. 



By ARCHIBALD R. WARD. 



PUBLISHED BY THE UNIVERSITY, 



ITHACA, N. Y. 



1900. . 



