Chapter I.--Apparatus Knowledge. Chapter II.--Shop Equipment and

Initial Procedure. Chapter III.--Cast Iron. Chapter IV.--Aluminum. Chapter V.--Steel. Chapter VI.--Malleable Iron, Copper, Brass, Bronze. Chapter VII.--Carbon Burning and other Uses of Oxygen and Acetylene. Chapter VIII.--How to Figure Cost of Welding. 167 pages, fully illustrated. Price =$1.00=

=Storage Batteries Simplified.= By VICTOR W. PAGÉ, M.S.A.E.

A comprehensive treatise devoted entirely to secondary batteries and their maintenance, repair and use.

This is the most up-to-date book on this subject. Describes fully the Exide, Edison, Gould, Willard, U. S. L. and other storage battery forms in the types best suited for automobile, stationary and marine work. Nothing of importance has been omitted that the reader should know about the practical operation and care of storage batteries. No details have been slighted. The instructions for charging and care have been made as simple as possible. Brief Synopsis of Chapters: Chapter I.--Storage Battery Development; Types of Storage Batteries; Lead Plate Types; The Edison Cell. Chapter II.--Storage Battery Construction; Plates and Girds; Planté Plates; Fauré Plates; Non-Lead Plates; Commercial Battery Designs. Chapter III.--Charging Methods; Rectifiers; Converters; Rheostats; Rules for Charging. Chapter IV.--Battery Repairs and Maintenance.