Report of the Commissioner for 1875-1876 . is made FURIFYING THE RESIDUUM OF GAS-WORKS. 849 of two-inch plank, covered with two inches of cement. F is the over-flow-line. C is the overflow-pipe, with flange at bottom bolted to JE7,and covered with cement to make it water-tight. H is the iron rodwith wheel at the top to turn valve I. I is the valve and box, laid incement, over discharge-pipe D. K is the lower section of the well,which receives the ammoniacal liquor before it is discharged out ofpipe D. L is the pipe through which the tar and oil are pumped fromthe bottom of section B. M is the
Report of the Commissioner for 1875-1876 . is made FURIFYING THE RESIDUUM OF GAS-WORKS. 849 of two-inch plank, covered with two inches of cement. F is the over-flow-line. C is the overflow-pipe, with flange at bottom bolted to JE7,and covered with cement to make it water-tight. H is the iron rodwith wheel at the top to turn valve I. I is the valve and box, laid incement, over discharge-pipe D. K is the lower section of the well,which receives the ammoniacal liquor before it is discharged out ofpipe D. L is the pipe through which the tar and oil are pumped fromthe bottom of section B. M is the chamber or box perforated withsmall holes at the bottom of section B to collect the tar and oil from thebreeze so that it may reach the pump pipe L. For the sake of greater clearness, we give an enlarged view of theammonia 54 VI.—TABLES OF TEMPERATURES OF AIR AND WATER ATSUNDRY STATIONS OF THE UNITED STATES SIGNAL OFFICE,FROM MARCH, 1874, TO FEBRUARY, 1875, AND FROM MARCH,1876, TO FEBRUARY, 1877, INCLUSIVE. Iii view of the great importance of accurate data in regard to thevarying temperature of the water of the rivers and lakes of the UnitedStates, in connection with the introduction of different kinds of newfishes, application was made to Brig. Gen. A. J. Myer, chief signal-officerof the United States Army, to cause observations on this subject to bemade by the persons attached to his service and distributed throughoutthe United States. With his usual readiness to render all possible aidto scientific and practical inquiry, General Myer caused blanks to beprepared for the record of the observations in question, and forwardedthem, with a suitable thermometer, to the various stations, and has sincesent copies of the returns to the office of the United States Fish Com-mission. The first of the two Woods
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Keywords: ., bookauthorunitedstatescomission, bookcentury1800, bookdecade1870
