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CATTLE DISEASES.-The bromthymol blue test was used extensively as a field diagnostic test for the diagnosis of MASTITIS. The incidence of MASTITIS in the laboratory herd, which included 22 newly calved heifers, is described.
Tests for JOHNE'S DISEASE were conducted each half-year on 35 herds. Of 2, ...

Hopkirk, C. S. M.
Report. Department of Agriculture, New Zealand, 1938, pp 22-27 pp.