Direct-current motor and generator troubles. T. S. Gandy and E. C. Schacht. McGraw. 270p. $2.50.
A book for the man concerned with the selection, operation, care and repair of direct-current electrical machinery. Discusses types of motors and generators, and their uses; their installation, starting and operation; switchboards; troubles and their remedies; tests and repairs, etc.
Senior author is designing electrical engineer of direct-current machinery, General Electric Company.
Advanced shop drawing; prepared in the extension division of the University of Wisconsin. V. C. George. McGraw. 147p. $1.60.
Correspondence school text book. A book for the student who, having had training in elementary mechanical drawing requires practice in its applications to special phases of the subject. The book has chapters on working drawings; gearing; isometric, cabinet and shaded drawings; patent office, structural and electrical drawings; piping layouts, and sheet metal work. Well illustrated with line drawings.
Author is instructor in mechanical engineering, University of Wisconsin.
Every step in canning: the cold-pack process. G. V. Gray. Forbes. 253p. $1.25.
Plain directions for canning in glass and tin by the one period, cold-pack process. Tells how to can fruits and vegetables; to make and can soups, jellies, jams and preserves; to dry fruits and vegetables; to cure, smoke and preserve meats; to preserve eggs, etc.
Addressed to those who are concerned with canning and preserving at home.
Author was formerly associate professor of home economics, Iowa State College.