_The things with which the engineer has to deal in that place where
steam is to be produced as an industrial agent, are_
_1. The Steam Generator._
_2. Air._
_3. Fuel._
_4. Water._
_5. Steam Appliances._
_Starting with these points which form a part of every steam plant,
however limited, however vast, the subject can easily be enlarged
until it embraces a thousand varied divisions extending through all
time and into every portion of the civilized world._
_It is within the scope of this work to so present the subjects
specified, that the student may classify and arrange the matter into
truly scientific order._