BOSTON.

SUDBURY RIVER SUPPLY.-Microscopical Examination of Water from Reservoir No. 3, Framingham.

BOSTON.

COCHITUATE SUPPLY. — Chemical Examination of Water from Lake Cochituate

17984 Dec. 1 Distinct. Slight. .23 4.80 1.05 .0024.0200.0150.0050.57

.0150.0002 .33 1.9

.0120.0000.35 2.1

.0000.0144.0104.0040.50

NOTE to analyses of 1896: Odor, generally vegetable, becoming somewhat stronger on heating. The samples were collected in the gate-house. For monthly record of height of water in this lake, see table at end of Boston analyses.

Number.

BOSTON.

COCHITUATE WORKS. — Chemical Examination of Water from a Faucet at the Massachusetts Institute of Technology, Boston.

NOTE to analyses of 1896: Odor, generally faintly vegetable, frequently none.

BOSTON.

COCHITUATE WORKS. — Microscopical Examination of Water from a Faucet at the Massachusetts Institute of Technology, Boston.

[Number of organisms per cubic centimeter.]

Day of examination,

Number of sample,.

15835 16000 16178 16350 16534 16706 16910 17120 17344 17570 17771 17983