Arranged in a Comprehensive Form from Eminent Authorities, containing a description of the Various Methods of Water Supply, Pollution and Purification of Waters, and Sanitary Effects, With Analyses of Potable Waters, Also Geology and Water Strata of Hamil. As the work progressed, its scope became broader, so much so that the author was induced to depart somewhat from the original idea and arrange the plan in a more comprehensive form for general use. To condense a large amount of information into a few pages to make it interesting and intelligent is a work requiring patience and diligence. While the work may be of little service to the profession, it is hoped those connected with waterworks and the general reader will find sufficient compensation for the time lost in its perusal.