Balance remaining in hands of collector of taxes for collection
Balance remaining in hands of water-registrar for collection

Total remaining in hands of water-registrar and collector of taxes for collection.
Doduct amount of tax claimed under existing laws to be exempt, (see supplement).
Leaving a clear balance remaining unpaid of.

WATER-REGISTRAR'S OFFICE, DISTRICT OF COLUMBIA, November 15, 1876.

Supplement to annual report.-Property exempt from water-main tax.

Statement showing amount of tax for laying water-mains assessed against church property, and remaining unpaid on the water-tax books November 15, 1876. Exempt under acts of Congress approved June 17, 1870, and March 3, 1875. See supplement to annual statement of taxes for laying water-mains remaining unpaid under head of

churches."

WATER-REGISTRAR'S OFFICE, DISTRICT OF COLUMBIA, November 15, 1876.

WATER-SUPPLY.

The engineer of the Washington Aqueduct, in his last annual report, estimates the quantity of Potomac water used in the District of Columbia every twenty-four hours at 25,000,000 gallons. Approximating the population of both cities, Washington and Georgetown, at 146,000, would give 165 gallons to each inhabitant thereof; 2,000,000 gallons a