====================+===============
| | Fuel Consumption | Cost of Fuel
| | Per Brake H.-P. | Per Brake
Fuel | Price of Fuel | 10 Hours | H.-P. 10 Hours
-----------------+-----------------+--------------------+---------------
Gasolene | 10c per gal. | 1.25 gal. | 12.5c
-----------------+-----------------+--------------------+---------------
Illuminating gas | $1.00 per 1000 | 180 cu. ft. | 18c
| cu. ft. | |
-----------------+-----------------+--------------------+---------------
Natural gas | 25c per 1000 | 130 to 160 cu. ft. | 3.25 to 4c
| cu. ft. | |
-----------------+-----------------+--------------------+---------------
Producer gas, | | |
anthracite | | |
pea coal | $4.00 per ton | 15 lb. | 2.67c
-----------------+-----------------+--------------------+---------------
Producer gas, | | |
charcoal | $10.00 per ton | 12 lb. | 5.35c
-----------------+-----------------+--------------------+---------------
Bituminous coal, | | |
ordinary | | |
steam engine | $3.00 per ton | 80 to 100 lb. | 10.7 to 13.4c
=================+=================+====================+===============

A photograph of a small (2 H.P.) gas engine made by the Foos Gas Engine
Co. with pump complete is shown in Fig. 47. This pump will lift forty
gallons of water per minute, with a suction lift up to twenty-five feet,
to a height of about seventy-five feet above the pump. The pump gear can
be thrown out of connection with the engine, so that the latter can be
used for other purposes where power is desired.

_Steam pumps._

[Illustration: FIG. 47.--A gas engine.]

The use of a steam pump would probably not be considered for a single
house unless a small boiler was already installed for other purposes.
Not infrequently a boiler is found in connection with a dairy for the
purpose of furnishing steam and hot water for washing and sterilizing
bottles and cans. Where silage is stored in quantity, a steam boiler and
engine are often employed for the heavy work of cu