TWENTIETH CENTURY TEXT-BOOKS 
A High School Course in Physics 
By FREDERICK R. GorRTON, Ph.D., Associate 
Professor of Physics, Michigan State Normal 
College. Fully and Practically Illustrated. 12mo, 
Cloth, $1.25 net. 
The author has written a text-book in Physics which is 
above all things practical, from the point of view of both 
teacher and pupil. All scientific facts are clearly stated and 
referred, wherever such reference will be valuable, to the 
student’s own experience and to the ordinary phenomena of 
his everyday observation. Without sacrificing the essentially 
scientific nature of the subject the author recognizes it as a 
science which has a very definite bearing upon everyday life. 
The author believes that the class-room work should be 
accompanied by suitable laboratory experimentation by the 
pupils supplemented with demonstrative experiments by the 
instructor. 
Stress is laid upon the beneficial results to which the study 
of Physics has led as its development has progressed. Espe- 
cial attention has been given to the interesting historical 
development of the subject. Portraits and adequate bio- 
graphical sketches of many scientists to whom the discovery 
of great principles is due have been inserted. 
The problems throughout the book eliminate the usual 
exercises in pure reduction and substitute those of a more 
concrete and practical nature. 
The apparatus described is as simple as experience has 
shown to be consistent with satisfactory results. 
The illustrations are abundant and each is given a descrip- 
tive legend. 
To aid the pupil in reviewing and the teacher in quizzing, 
there are summaries at the ends of the chapters. 
No subject has been left out that is called for in the report 
of the College Entrance Requirement Board. 
D. APPLETON AND COMPANY 
NEW YORK CHICAGO 
4536 
