Anthracite        Bituminous        Coal gas
per ton of        per ton of        per 1,000
2,240 lb.         2,240 lb.         cubic feet.

New York          $4 00             $4 25             $1 75
Chicago            5 00              3 50              1 25
New Orleans        6 00              3 50              3 00
San Francisco     12 00              7 50              3 00
London             5 00              3 00              0 75
Port Natal        12 50             11 00
Sydney            12 00              7 00
Valpariso         11 50              7 50

Generator         Crude               Water gas
gas per 1,000     Petroleum per       per 1,000
cubic feet.       bbl. of 42 gal.     cubic feet.

New York         $0 45             $1 80               $0 50
Chicago             45              2 00                  50
New Orleans         45              2 50                  60
San Francisco       55              2 00                  60
London              43              2 70                  45
Port Natal        Ap-               4 00                Ap-
Sydney            proxi-            4 50                proxi-
Valparaiso        mation.           3 00                mation.

In calculating the following table the specific gravity of coal gas is taken at 0.4; generator gas at 0.44; water gas at 0.48; petroleum, 0.8.

Pounds of fuel for $1.00.  March, 1884.

Anthracite.  Bituminous.  Petroleum.  Coal Water Generator
gas gas. gas.

New York         560         527        156       18   74      76
Chicago          448         640        142       24   74      76
New Orleans      374         640        114       10   74      76
San Francisco    187         299        142       10   62      62
London           448         747        104       40   82      79
Port Natal       179         204         71            Ap-     Ap-
Sydney           187         320         63            proxi-  proxi-
Valparaiso       195         299         94            mate.   mate.

These figures, multiplied by the actual evaporative powers as calculated, give: 

Pounds of water evaporated from 212 deg.  F. For $1.

Anthracite.  Bituminous.  Petroleum.  Coal Generator Water
gas gas. gas.

New York        5040         4643       2948     338    220     577
Chicago         4032         5638       2684     451    220     577
New Orleans     3366         5638       2155     188    220     577
San Francisco   1683         2634       2684     188    179     484
London          4032         6581       1966     751    228     640
Port Natal      1611         1797       1342           Ap-     Ap-
Sydney          1683         2819       1191           proxi-  proxi-
Valparaiso      1755         2634       1776           mate.   mate.

Relativecosts.