Report on the subject of introducing pure water into the city of Boston

This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1834 ...in Lincoln, is a beatiful lake of 152 acres, and 222.65 feet above the marsh. The whole shore is formed of sand and gravel. It is furnished by springs, but its discharge does not appear adequate to the supply, though it has not been guagcd. It appears from Dr. Jackson's trial to be the most pure, from its specific gravity being equal to pure water. It is C in the list. The whole intermediate country to high land in Roxbury or Dorchester is mostly too low and very unfavorable for an aqueduct, and the distance too great for pipes. 4. Baptist Pond in Newton near Dr. Homer's Church, is only 33 acres and an half and 137.46 feet above marsh level. It is a beautiful sheet of water in a gravelly bason, fed by springs, and has a small outlet, but is too small for the occasion, unless like many others, it be united as a feeder to some other source. Its place is.D in the table. 5. Punkapog Pond in Canton has an area of 217 acres and 147.77 feet above marsh level, or high water mark at the mouth of Neponspt River. From the appearance of the pond and of the copious discharge from it, it was hoped that this was a practicable and abundant soarce, and the analysis of Dr. Jackson marked E, shows it to be sufficiently pure. But on trying the levels, in two or three directions, the ground was too low for an aqueduct. Finding these circumstances unfavourable, I turned my attention next to sources in the west and examined the Ponds in Natick and Framingham. But attempts were subsequently made to find the amount and to guage the discharge from Punkapog. The U. S. Engineers on their surveys for the Weymouth Canal, in 1830, had the outlet guaged by allowing the water to flow through a weir or notch 24 inches wide and it was found to be, as I am informed, 10 inches deep, which give...