Publisher's Synopsis
Excerpt from Experimental Investigations by the State Board of Health of Massachusetts, Upon the Purification of Sewage by Filtration and by Chemical Precipitation, and Upon the Intermittent Filtration of Water: Made at Lawrence, Mass., 1888-1890; Part II. Of Report on Water Supply and Sewerage
Outside of the building, in the field, where the surface of the ground is seven and one-half feet above the top of the measuring basins, are ten large wooden tanks, sunk their full depth into the ground, one opposite each of the measuring basins.
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