NATURAL SCIENCE TEXT-BOOKS. 



Principles of Physics. A Text-book for High Schools and Academies. 



By Alfred P. Gage, Instructor of Physics in the English Sigh 



School, Boston. $1.30. 

 Elements of Physics. A Text-book for High Schools and Academies. 



By Alfred P. Gage. $1.12. 

 Introduction to Physical Science. By Alfred P. Gage. $1.00. 

 Physical Laboratory Manual and Note-Book. By Alfred F. Gage. 



35 cents. 

 Introduction to Chemical Science. By B. P. WiLLiiMs, Instructor in 



Chemistry in the English High School, Boston. 80 cents. 

 Laboratory Manual of General Chemistry. By E. P. Williams. 25 cents. 

 Chemical Experiments. General and Analytical. By R. P. Williams. 



For the use of students in the laboratory. 50 cents. 

 Elementary Chemistry. By George R. White, Instructor of Chemistry, 



Phillips Exeter Academy. $1.00. 

 General Astronomy. A Text-book for Colleges and Technical Schools. 



By Charles A. Young, Professor of Astronomy in the College of 



New Jersey, and author of " The Sun," etc. $2.25. 

 Elements of Astronomy. A Text-book for High Schools and Academies, 



with a Uranography. By Professor Charles A. Young. $1.40. 



Uranograpliy, 30 cents. 

 Lessons in Astronomy. Including Uranography. By Professor Charles 



A. Young. Prepared for schools that desire a brief course free from 



mathematics. $1.20. 

 An Introduction to Spherical and Practical Astronomy. By Dascom 



Greene, Professor of Mathematics and Astronomy in the Rensselaer 



Polytechnic Institute, Troy,N.Y. $1.50. 

 Elements of Structural and Systematic Botany. For High Schools and 



Elementary College Courses. By Douglas Houghton Campbell, 



Professor of Botany in the Leland Stanford Junior University. $1.12. 

 Elements of Botany. By J. Y. Bergen, Jr., Instructor in Biology in the 



English High School, Boston. $1.10. 

 Laboratory Course in Physical Measurements. By W. C. Sabine, 



Instructor in Harvard University. $1.25. 

 Elementary Meteorology. By William M. Davis, Professor of Physical 



Geography in Harvard University. With maps, charts, and exercises. 



$2.50. 

 Blaisdell's Physiologies : Onr Bodies and How We Liye, 65 cents ; How to Keep 



Well, 45 cents ; Child's Book of Health, 30 cents. 

 ,A Hygienic Physiology. For the Use of Schools. By D.F. Lincoln, M.D., 



author of " School and Industrial Hygiene," etc. 80 cents. 



Copies will he sent, postpaid, to teachers for examiiia- 

 tion on receipt of tile introduction prices given above. 



GINN & COMPANY, Publishers, Boston, New York, Chicago, Atlanta. 



