Having, by his own genius, or through the aid of his friends,
found that some improved machinery may be successfully applied to
his pursuit, he makes drawings of his plans of the machinery, and
may himself be considered as constituting the first section. He
next requires the assistance of operative engineers capable of
executing the machinery he has designed, some of whom should
understand the nature of the processes to be carried on; and
these constitute his second section. When a sufficient number of
machines have been made, a multitude of other persons, possessed
of a lower degree of skill, must be employed in using them; these
form the third section: but their work, and the just performance
of the machines, must be still superintended by the second class.
247. As the possibility of performing arithmetical
calculations by machinery may appear to non-mathematical readers
to be rather too large a postulate, and as it is connected with
the subject of the division of labour, I shall here endeavour, in
a few lines, to give some slight perception of the manner in
which this can be done--and thus to remove a small portion of
the veil which covers that apparent mystery.
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