964,851
Oil used (gallons) 715,418,623
Length of gas mains (miles) 58,727

        Manufactured products sold

Total gas (cubic feet) 203,639,260,000
Straight coal gas (cubic feet) 10,509,946,000
Carbureted water gas (cubic feet) 90,017,725,000
Mixed coal- and water-gas (cubic feet) 86,281,339,000
Oil gas (cubic feet) 16,512,274,000
Acetylene (cubic feet) 136,564,000
Other gas, chiefly gasolene (cubic feet) 181,412,000
Coke (bushels) 114,091,753
Tar (gallons) 125,938,607
Ammonia liquors (gallons) 50,737,762
Ammonia, sulphate (pounds) 6,216,618

Of course, only a small fraction of the total gas manufactured is used for lighting.

According to the U. S. Geological Survey, the quantities of gas sold in this country in the year 1917 were as follows: 

Coal-gas        42,927,728,000 cubic feet
Water-gas      153,457,318,000   "    "
Oil-gas         14,739,508,000   "    "
Byproduct gas  131,026,575,000   "    "
Natural gas    795,110,376,000   "    "

In 1914 there were 38,705,496 barrels (each fifty gallons) of illuminating oils refined in this country and the value was $96,806,452.  About half of this quantity was exported.  In 1914 the value of all candles manufactured in this country was about $2,000,000, which was about half that of the candles manufactured in 1909 and in 1904.  In 1914 the value of the matches manufactured in this country was $12,556,000.  This has increased steadily from $429,000 in 1849.  In 1914 the glass industries in this country made 7,000,000 lamps, 70,000,000 chimneys, 16,300,000 lantern globes, 24,000,000 shades, globes, and other gas goods.  Many millions of other lighting accessories were made, but unfortunately they are not classified.

Some figures pertaining to public electric light and power stations of the United States for the years 1907 and 1917 are as follows: 

1917            1907
Number of  establishments                     6,541            4,714
Commercial                                  4,224            3,462
Municipal                                   2,317            1,562
Income                                 $526,886,408     $175,642,338
Total horse-power of plants              12,857,998        4,098,188
Steam engines                           8,389,389        2,693,273
Internal combustion engines               217,186           55,828
Water-wheels                            4,251,423        1,349,087
Kilowatt capacity of generators           9,001,872        2,709,225
Output in millions of kilowatt-hours         25,438            5,863
Motors served (horse-power)               9,216,323        1,649,026
Electric-arc street-lamps served            256,838           ....