John F. McKinlay, Detroit, Mich., secretary Detroit Board of Health.

Henry Vaughan, Detroit, Mich., epidemiologist, Detroit Board of Health.

R. U. Pryer, director of laboratories, Detroit Board of Health.

Dr. William H. Price, Detroit, Mich., health officer, Detroit.

Col. William Livingstone, Detroit, Mich., representing the Great Lakes Carriers’ Association.

Morris Knowles, of Pittsburgh, Pa., representing the Great Lakes Carriers’ Association.

A. H. Dittoe, chief engineer, Ohio State Board of Health, representing State Board of Health of Ohio and also the Great Lakes Pure Water Association.

Francis King, K. C., Kingston, Ontario, representing the Dominion Marine Association.

Alexander Adams, Ecorse, Mich.

Russell A. Murdock, C. E., Ecorse, Mich.