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[[preprinted]]
File No.
U.S.S. MALLARD
[[/preprinted]]

BACTERIOLOGIC EXAMINATION OF WATER SPECIMEN TAKEN FROM STREAM AT FRESH WATER BAY, CHATHAM ISLAND ON APRIL 7, 1941.

Method used was the Dominie and Lauter test - " a quick and simple method considered superior to practically all other methods" although not an official standard test.

Result of test of the one and only specimen taken:

140 or more organisims (of the coli-aero-genes group of ^[[f]]ecal origin) per 100 cc. of water, which is considered gross contamination.

Result indicates that the stream is subject to fecal contamination (of animal or human origin) admitting the possibility of its being a source of water borne diseases such as typhoid fever, amoebic or bacillary dysentery which are transmitted from man to man by way of drinking water. Or, it may simply indicate relatively harmless pollution by animals such as burros, dogs, etc.

^[[Lt. Jos. J. Blanch (M.C.) U.S.N]]