The philosophy of eating. By Albert J. Bellows, M.D.

196

AMERICAN WATERS.

Waters used in American Cities.

Inorganlic.
Croton Water, NEW YORK. 1I c.
11.34
- Soluble matter,..
Schuylkill Water, PHILADELPHIA. -Soluble mat- 7.29
ter,... J
Cochituate Water, BOSTON.
e 2.90
-Soluble matter,.. J

Organic. Total.
7.37 18.71
2.13 9.42
2.45 5.35

The above analyses are by Professor Horsford, and
are from one hundred thousand parts,'while the analyses of London water were from seventy thousand parts,
making the contrast greater than appears in the figures
by nearly one third. Professor Benjamin Silliman remarked in his report on Cochituate water, that it is
so nearly pure as to answer very well for chemical purposes, for which distilled water is generally used. The
reason of its purity is evident. Cochituate Lake, being
supplied mainly from springs coming through pure
granite sand, and resting also on pure sand, and not
being much exposed to the influence of decaying vegetable matters, it has no source of supply either of
organic or inorganic material.
The importance of pure water, as a means of preserving health, will be understood by all who have
given attention to the laws which I have endeavored
to explain, by which all elements not organized in pure
water, pure air, and appropriate food, are rejected by