BOOKS OF INTEREST
Reading edition
THE NATURE OF MATTER AND ELECTRICITY
AN OUTLINE OF MODERN VIEWS
By DANIEL F. COMSTOCK, S.B., Ph.D.
Engineer and Associate Professor of Theoretical Physics In the Massachusetts Institute of Technology, and
LEONARD T. TROLAND, S.B., A.M., Ph.D.
Instructor In Harvard University
225 Pages 5½ × 8 Cloth 22 Illustrations 11 Plates Postpaid $2.50
THE MYSTERY OF MATTER AND ENERGY
RECENT PROGRESS AS TO THE STRUCTURE OF MATTER
By A. C. CREHORE, Ph.D.
172 Pages 4½ × 6½ Cloth 8 Plates and Folding Charts Postpaid $1.00
THE ATOM
By A. C. CREHORE, Ph.D.
250 Pages 5 × 7½ 6 Illustrations $2.00