TABLE 20.-Heating value and purity of the gas supplied by the Georgetown Gas Light Co. from Sept. 1, 1914, to Dec. 31, 1914 (Georgetown testing station).

650.1 689.1 621.0
2.28 3.22 0.77 7.72 8.12 7.06
641.2 671.3 612.1 1.29 1.78
.79
6.53 6.53 6.53
24 651.3 664.1 636.1 1.42 2.46 .77 11.89 15.15 8.52
25 640.0 678.0 617.5 1.04
1.75 .72 11.80 13.09 10.66

0000

95 645.7 689.1 612.1 1.55

PURITY.

UNDER BOTH REGULATIONS.

For the results of tests for ammonia, total sulphur, and hydrogen sulphide, see Tables 13 to 20, inclusive.

PRESSURE.

A continuous record of the gas pressure was obtained at each testing station by means of automatic pressure recorders. The means and extremes thus secured are as follows:

See Tables 21, 22, 23, and 24 for complete pressure data.

TABLE 21.—Pressure of the gas supplied by the Washington Gas Light Co. from Jan. 1 to

Inches. Inches. Inches. Inches. Inches. Inches. Inches. Inches. Inches.

March

3.6

5.0

2.5

TABLE 22.—Pressure of the gas supplied by the Washington Gas Light Co. from Sept. 1 to Dec. 31, 1914.

TABLE 23.—Pressure of the gas supplied by the Georgetown Gas Light Co. from Jan. 1

TABLE 24.—Pressure of the gas supplied by the Georgetown Gas Light Co. from Sept. 1

Prior to September 1, all meter testing work of this bureau was done in the meter proving room at the bureau headquarters, Tenth and D Streets NW., in compliance with the old regulations. Since the above date, in compliance with the new regulations, all new and repaired meters have been tested in the meter proving rooms at the gas companies' meter repair shops by the gas companies under the immediate supervision of an employee of the gas-inspection bureau, and the referee or complaint meters were tested as formerly in the bureau's meter proving room.

During the period from January 1, 1914, to August 31, 1914, the bureau tested a total of 11,406 gas meters. Of this number 2,387 were new meters and 7,978 repaired meters; 686 were consumers' meters on complaint of consumers and 355 consumers' meters on complaint of the gas utilities.

From September 1, 1914, to December 31, 1914, a total of 6,968 tests of gas meters were conducted, 6,462 being supervisory tests and 506 referee tests. Of the supervisory tests 3,551 were new meters and 2,911 repaired meters. Of the referee tests 379 were made at the request of consumers and 127 at the request of the gas utilities. For the results of these tests, see Tables 25, 26, 27, and 28.