A major part of the work program of this Project has been the collection and analysis of samples of water taken from the various waterways of the Interstate Sanitation District. Some work had been done in this connection in the 1937 but, due to the lack of equipment, was limited to the taking of samples for the determination of dissolved oxygen. The work done in 1937 was somewhat unsatisfactory due to the fact that the method of collecting the samples was not performed in the manner required by the standard methods of the American Public Health Association for water and sewage analyses. In 1937 the Project did not have a proper sample collector and the samples were collected in glass stoppered bottles, weighted with lead sinkers. In making dissolved oxygen determinations the method of obtaining the is prime importance for obtaining accurate results.

The Work of the Project in the 1938 Included the taking of samples for the determination of the dissolves oxygen, the determination of the total thirty-seven degree count of the bacteria and the determination of the number of coliform organisms present. Some work was also done in the collection of samples for the determination of the biochemical oxygen demand of the various waterways.

In addition to the above mentioned tests which were made in various sections of the Interstate Sanitation District, a special study was made of the waters of JamaicaBay. This work was mainly a long continued program of tests for the determination of the number of coliform group of intestinal bacteria present in various parts of the waters of JamaicaBay.

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