Leading Scientific Text-Books 



ASTRONOMIES 



ng the great i 

 clear and forcible wr 

 astronomical text-books 



Professor Young's position 

 world is firmly established, 

 equally well known. His serit 

 in an unusual degree the qualities of accurate scholarship, simplicit 

 of style, and clearness of statement which belong to every successfi 

 text-book. 



Lessons in Astronomy, Revised Edition. Manual of Astronomy. 

 Elements of Astronomy. General Astronomy. 



BERGEN'S BOTANIES 



. "Bergen's botanies were the first to combine a standard t 

 fical laboratory course, and a key for systematic work. 



of these three things brought them at once into a leading 

 position among botany texts, — a position they have since maintained. 

 Elements of Botany, Revised Edition (now ready). 

 Foundations of Botany. 



Notebook to accompany Bergen's Text-books of Botany or for 



general use in Botanical Laboratories. 



WILLIAMS' CHEMISTRIES 



► being scientifically a 



e author's text-books 



1 chemistry are interesting and attractive. 

 Elements of Chemistry. Chemical Exercises. 



Introduction to Chemical Science. Chemical Experiments. 

 BLAISDELL'S PHYSIOLOGIES. 



Blaisdell's physiologies have maintained a remarkable popularity 

 in the educational world. The books present in clear and simple 

 language the latest and most trustworthy facts on physiology and 

 hygiene. Special attention is given to the subject of the care and 

 preservation of the health. Important facts are illustrated by a 

 series of simple experiments which the pupil can perform with little 

 or no outlay for apparatus. This feature is peculiar to the Blaisdell 

 books and has been found no less valuable than original. 



Child's Book of Health. 



How to Keep Well. (Revised Edition.) 



Our Bodies and How We Live. (Revised Edition.) 



Life and Health. 



Practical Physiology. 



GINN & COMPANY Publishers n 



rON NEVYORK CHICAGO LONDON 



