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Author notes

1Presented at the 50th Annual Meeting, Massachusetts Milk Inspectors Association, Bancroft Hotel, Worcester, Massachusetts, January 5, 1956.

Dr. David Levowitz received the B.S. degree from the College of the City of New York in 1927, the M.S. degree in bio-chemistry in 1927 and the Ph.D. degree in physical chemistry in 1936 from Rutgers University. Since 1936 Dr. Levowitz has been Director of the New Jersey Dairy Laboratories. This organization supplies laboratory and consultation service to health departments and to the dairy and food industries.

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