. Our firemen. A history of the New York fire departments, volunteer and paid ... 650 engravings; 350 biographies. . feet high above this level, makes the totalheight -nm the^rock about two hundred and seventy feet. The width of thegorge at the bottom is four hundred feet, and the top of the dam is one thou-sand four hundred feet in length, to be occupied by a river. No water willflow over the dam itself; all freshets and waste will pass by an ample spill-waycut in the rock to the south and west of the dam. There will be about fivehundred thousand cubic yards of stone masonry laid in hydraulic
. Our firemen. A history of the New York fire departments, volunteer and paid ... 650 engravings; 350 biographies. . feet high above this level, makes the totalheight -nm the^rock about two hundred and seventy feet. The width of thegorge at the bottom is four hundred feet, and the top of the dam is one thou-sand four hundred feet in length, to be occupied by a river. No water willflow over the dam itself; all freshets and waste will pass by an ample spill-waycut in the rock to the south and west of the dam. There will be about fivehundred thousand cubic yards of stone masonry laid in hydraulic cement, andit is estimated to cost between four and five mUlion, and require a little lessthan five years to build. So far the work has progressed with great loss of life and injury to shifts of workmen occur in twenty-four hours, and the work iscontinued night and day. The shafts range in depth from over sixty to three hundred and fifty feet. The energy of those in charge has I n wonderful, and the labor-saving expedients admirable. As a whole the undertaking hasbeen managed with consummate GROUP OVER GATE OF GREAT RESERVOIR. 0 Il! F 1 \l K M FN. CII A PT E R XXI. IMPROVEMENT A NI > GROWTH OF THE CITY. eition of a Street Commissioners Department. -Active Measures of Improvement of Wells and Pumps. The City South of Grand Street Lighted with Gas AncientBurial Grounds Obliterated.—Public Schools. Wharves, Slips and Buildings Croton Cisterns City Debt. Water Pipes. OPPORTUNITY has boon taken at various parts of preceding chapters topoint out many of the leading improvements of former years. It willnow suit our purpose best to take up these improvements at the yearIs30, when the records are more delinite on the subject, and within the eoui->ass of a couple of chapters to mark thenceforth to the present time the rapid
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