All About Engines
Forfatter: Edward Cressy
År: 1918
Forlag: Cassell and Company, LTD
Sted: London, New York, Toronto and Melbourne
Sider: 352
UDK: 621 1
With a coloured Frontispiece, and 182 halftone Illustrations and Diagrams.
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Fuel and Its Problems 329
did anyone attempt to calculate the amount avail-
able, and it was three years later when the powerful
voice of Professor Stanley Jevons was raised in
warning. Ultimately the Government appointed a
Royal Commission, which reported in 1870 that the
probable amount was 146,480 million tons. And as
the amount raised in that year was only no million
tons there appeared to be sufficient to last 4,000
years.
But the amount raised annually did not stop at
no million tons. Factories and workshops increased
and multiplied; ships became larger, swifter, and
more numerous. The population of the towns grew
rapidly while, relatively, the population of the coun-
try declined. The demand for food exceeded, to a
greater and greater extent, the home supply. More
and more food had to be imported, and for many of
our imports we had to pay directly or indirectly in
coal. Consequently the amount raised annually in-
creased as shown in the following table :—
1871 . . . no million tons
1898 • . . 202
1899 • • • 220 ,, „
The 4,000 years of possible duration was now re-
duced to 2,000 years, and there was still no sign of
the demand for coal abating. In 1901 another Royal
Commission was appointed. They reported in 1905,
and came to the conclusion that there was still a store
of 140,000 million tons—a result which confirmed
the opinion of the Commission which sat thirty years