SCIENCE 



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S'^ffT «„. Friday, January 9, 1920 



Toi» LI, No. 1806 ' ' 



Blakiston 



ANNOUNCES 

 Tower, Smith, Turton and Cope 



PHYSICS 



By Willis E. Tower, Asst. Prin. Englewood High School, 

 Chicago; Charles H. Smith, Asst. Prin. Hyde Park High 

 School, Chicago; Charles M. Turton, Head Dept. of 

 Physics, Bowen High School, Chicago, in collaJboration with 

 Thomas D. Cope, Asst. Professor of Physics, University 

 of Pennsylvania. 



This book is based upon — and in a sense is a revision of — Principles of 

 Physics by the first three named authors. Five years of experience in 

 teaching this popular and useful text have proved the firmness of the 

 foundation upon which it was built and have brought to light the weak- 

 nesses of its structure. To the preparation of the new book. Professor 

 Cope has brought the point of view of the university teacher who has 

 seen the results of high school instruction with thousands of college 

 freshmen. 



READY IN FEBRUARY 



P. BLAKISTON'S SON & CO. 



PUBLISHERS PHILADELPHIA 



