Weaccordingly find that all the water in the city contains these, and occasionally other ingredients. For the following analysis of pump waters in various parts of the city, the Committee are indebted to one of its members. When it is recollected that the hardest spring water seldom contains so much as one thousandth part of its weight of any foreign body in solution, it would seem that the term, mineral water, would be a more correct designation for the ordinary waters of this city.

Results of analysis of various mineral and pump waters in the city of New- York, by George Chilton, chemist :

No. 1. A pint of water yielded 10 grains of solid matter, consisting of " Mur. Magnes. - - 3 50 Mur. Sod. - 4 Sulph. Lime, - 25 Carb. Lime and Magnesia, 1 25 Carb. Potass and Extractive, - 75 Loss,

Total, 10

No. 2. A pint yielded 7 grains of dry residue, consisting of Mur. Magnes. - 2 Mur. Soda, Sulph. Lime, -

- - ... 2 l

CROTON AQUEDUCT. Carb. Lime and Magnes., 1 25 Extractive Matter and Loss, 75

Total, 7

No. 3. A pint yielded 4 50 grains composed of Mur. Soda, 1 Mur. Magnes., - 2 Carb. Lime, 1 Sulph. Lime and Extractive, 50 - -

Total, 4 50

No. 4. A pint yielded about 4 grains composed of Mur. Lime. Mag. and Extractive, 1 80 Mur. Soda, - - Sulph. Lime, Carb. Lime, - - 1

Total, 4 05