By John Trowbridge, S.D. Cloth, 12mo, 387 pages $1.20
A thoroughly modern work, intended as a class manual of Physics for colleges and advanced preparatory schools.
Hammel's Observation Blanks in Physics
By William C.A. Hammel.
Flexible, quarto, 42 pages. Illustrated 30 cents
A pupil's laboratory manual and notebook for the first term's work. Blanks are left in which the pupil writes his observations and the principles illustrated.
Copies of this book will be sent prepaid to any address, on receipt of the price, by the Publishers:
American Book Company
NEW YORK · CINCINNATI · CHICAGO