Introduction The title of this work almost suffices to indicate the character of the contents, without the aid of any prefatory explanation.  The authors have no new theories to advance, nor discoveries to relate; their aim has been rather to discuss from an everyday practical view the various mechanical trades that deal with the conversion of wood, metal, and stone into useful projects. The method of treatment of each branch is scientific, yet simple.  First in order comes the raw material worked upon, its characters, variations, and suitability.

Then the tools used in working up the material are examined as to the principles on which their shape and manipulation are based, including the  means adopted for keeping them in order, by grinding, tempering, filing, setting, handling, and cleaning.

A third section, where necessary, is devoted to explaining and illustrating typical examples of the work to be executed in the particular material under notice.   Thus the book forms a complete guide to all the ordinary mechanical operations; and whilst professional workmen will find in it many suggestions as to the direction in which improvements should be aimed at, amateur readers will be glad to avail themselves of the simple directions and ingenious devices by which they can in a great degree overcome the disadvantage of lack of manipulative skills.