Examinations of the water supplies and inland waters of Massachusetts. 1887-1890. Introduction. I. Examinations of water supplies and rivers. 2. Drown, T.M. The chemical examination of waters and the interpretation of analyses. 3. Parker, G.H. Report upon the organisms, excepting the bacteria, found in the waters of the state, July, 1887, to June, 1889. 4. Stearns, F.P. Summary of water-supply statistics; also records of rainfall, flow of streams, and temperatures of air and water. 5. A classification of the drinking waters of the state. 6. Stearns, F.P., and Drown, T.M. Special topics relating to the quality of public water supplies. 7. Stearns, F.P. The pollution and self-purification of streams. Vol. 2. Experimental investigations upon the purification of sewage ... , and upon the intermittent filtration of water, Lawrence, Mass., 1888-1890