He was looking
for cuts, diagrams, geometrical figures, theories for constructing
engines and boilers and all that sort of thing and didn't find them.
Hence "It is no trick to run an engine."
If this has been your idea of "Rough and Tumble Engineering" forget all
about your theory, and go back and read it over and remember the little
suggestions and don't expect this book to teach you how to build an
engine. We didn't start out to teach you anything of the kind. That is
a business of itself. A good engineer gets better money than the man
who builds them. Read it as if you wanted to know how to run an engine
and not how to build one.
Study the following questions and answers carefully. Don't learn them
like you would a piece of poetry, but study them, see if they are
practical; make yourself thoroughly acquainted with the rule for
measuring the horse-power of an engine; make yourself so familiar with
it that you could figure any engine without referring to the book. Don't
stop at this, learn to figure the heating surface in any boiler. It
will enable you to satisfy yourself whether you are working your boiler
or engine too hard or what it ought to be capable of doing.
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