a1 Department of Pathology, University and Western Infirmary, Glasgow*
a2 Bacteriology Department, West of Scotland Agricultural College, Glasgow
Total and differential cell counts were obtained for 1710 samples of milk taken from cows in which the stage of lactation was known. A bacteriological examination of the samples was also made. The total and differential cell counts considered together showed no marked advantage over the total cell count alone in the diagnosis of mastitis, except in milk of late lactation.
(Received November 06 1953)
* Now at the Hannah Dairy Research Institute, Kirkhill, Ayr.