The pollution of rivers; and examination of the water-basins of the Blackstone, Charles, Taunton, Neponset, and Chicopee Rivers; with general observations on water-supplies and sewerage, by J. P. Kirkwood. With an appendix, giving Chemical analyses, by W. R. Nichols.--The water-supply, drainage and sewerage of the state, from the sanitary point of view, by F. Winsor.--The disposal of sewage, by C. F. Folsom.
