Half a o-allon of water taken from the Croton at Wood's bridge, pelded by evaporation, 2.3^3 grains residuum, in the following proportions :-- Vegetable matter. 1,33 : Carbonates of lime and magnesia, 1,200; Muriate of magnesia, 1,000; Total, of grains.f^ 2.333.

Prior to the erection of the dam, shad fish annually ascended the river some miles above the present lake. The fishinf is now entirely confined to trout, perch, and other fresh water fish.

In iSoo it was proposed to render the Croton river navigable, from its mouth to Pine's Bridge. The following report of die engineers is entitled : --

<i tj'.'C Corporut, Doc. of N. Y., Xo. xxxvL 409.

THE TOWN OF YORKTOWN. 705

♦' ESTIMATE OF EXPENSE TO MAKE THE CEOTON RTTEE NAVIGABLE FOE BOATS OF

T^O TONS."

Tlie falls at Crotou river with a lock, The falls below the Old bridge,

Small rapid,

Kapid aud stony, ....

Two small fails, ....

Rocky falls and stony water,

Fall both above and below Fowler's mill,

Rapids and rocks.

Long rapid water, two stony falls,

do do

Fall at Carpenter's mills and locks . A short rapid, ....

This brings us to Pines Bridge. Here we find eighteen obstructions, such as small rapids, fish M'ares, stony, &c., &c. The cost of which is estimated at . . . " .

£350

eo

£1,650

Pines Bridge crosses the lake about one mile above the dam. Ou the south side of the Croton is a small settlement bearing the name of Crotonville -- which contains a Methodist church, a Friend's meeting house, two stores, a tavern, a post ofhce, and several scattered dwellings. The old bridge was situated west of the present structure, and served, during the Revolution, as the principal communication between the lines. Here the Americans generally kept a strong guard for the purpose of affording timely notice of an enem/s approach.