THIS book is one of the
series of handbooks on industrial subjects being published by the
Popular Mechanics Co. Like the magazine, these books are "written so
you can understand it," and are intended to furnish information on
mechanical subjects at a price within the reach of all.
The texts and
illustrations have been prepared expressly for this Handbook Series, by
experts; are up-to-date, and have been revised by the editor of Popular
Mechanics.