to have readily available have been secured, and prepared especially for
this work, and those of most general use have been combined with the
chapter on welding practice to which they apply.

The size of this volume has been kept as small as possible, but an
examination of the alphabetical index will show that the range of subjects
and details covered is complete in all respects. This has been accomplished
through careful classification of the contents and the elimination of all
repetition and all theoretical, historical and similar matter that is not
absolutely necessary.

Free use has been made of the information given by those manufacturers who
are recognized as the leaders in their respective fields, thus insuring
that the work is thoroughly practical and that it represents present day
methods and practice.

THE AUTHOR.




CONTENTS

CHAPTER I

METALS AND ALLOYS--HEAT TREATMENT:--The Use and Characteristics of the
Industrial Alloys and Metal Elements--Annealing, Hardening, Tempering and
Case Hardening of Steel

CHAPTER II