by burning their own globe?"

"Yes! The whole of it, my lad," answered the engineer.
"The earth would have passed to the last bit into the furnaces
of engines, machines, steamers, gas factories; certainly, that would
have been the end of our world one fine day!"

"There is no fear of that now, Mr. Starr. But yet, the mines will
be exhausted, no doubt, and more rapidly than the statistics make out!"

"That will happen, Harry; and in my opinion England is very
wrong in exchanging her fuel for the gold of other nations!
I know well," added the engineer, "that neither hydraulics nor
electricity has yet shown all they can do, and that some day
these two forces will be more completely

utilized. But no matter! Coal is of a very practical use,
and lends itself easily to the various wants of industry.
Unfortunately man cannot produce it at will. Though our external
forests grow incessantly under the influence of heat and water,
our subterranean forests will not be reproduced, and if they were,
the globe would never be in the state necessary to make
them into coal."

James Starr and his guide, whilst talking, had continued their walk
at a rapid pace. An hour after leaving Callander they reached
the Dochart pit.

The most indifferent person would have been touched at the appearance
this deserted spot presented. It was like the skeleton of something