®l)e ^ommonroealtl) of iHassacliuactts. 



STATE BOAKD OF AGRICULTURE. 



CIRCULAR No. 11. 



December, 1913. 

 Contribution from the Dairy Bureau, P. M. Harwood, General Agent. 



Some Bacteriological Aspects of 

 Clean Milk Inspection. 



By Charles E. Marshall, Ph.D., Professor of Microbiology 



AND Director of the Graduate School, Massachusetts 



Agricultural College, Amherst, Mass. 



BOSTON 



WRIGHT & POTTER PRINTING CO., STATE PRINTERS 



32 DERNE STREET 



1913 



