BOOKS OF INTEREST
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