THE FOURTEEN WEEKS' COURSES 



IN 



NATURAL SCIENC 



BY 



J. DORMAN STEELE, A.M., Pn.D. 



Fourteeij Weeks iij Natural Ptylosopty, 

 Fourteeij Weeks iij Cljenjistry, 

 Fourteeij Weeks iij Descriptive Astroijonjy, 

 Fourteeij Weeks iij Popular Geology, 

 Fourteeij Weeks iij Human Physiology, 

 Fourteeij Weeks iij Zoology, 

 Fourteerj Weeks in Botany, 



A Key, containing Answers to the Questions 

 and Problems in Steele's 14 Weeks' Courses, 



SERIES, 



ON THE PLAN OF STEELE'S 14 WEEKS IN THE SCIENCES. 



A Brief hjistory of the United States, 

 A Brief F|istory of Fraijce, 



The same publishers also offer the following standard scientific 

 works, being more extended or difficult treatises than those of 

 Prof. Steele, though still of Academic grade. 



Peck's Ganot's Natural Philosophy, 

 Porter's Principles of Chemistry, 

 Jarvis' Physiology and Laws of Healtfy 

 Wood's Botanist and Florist, 

 djanjbers' Elements of Zoology, 

 tyclij tyre's ^stro$)tfty and 

 Page's Elenjents of GeologJ, * s 



tDUCATJON DEPT. 



Entered according to Act of Congress, in the year 1869, by 



A. S. BARNES & CO., 



In the Clerk's Office of the District Court of the United States 

 for the Southern District of New York. 



STEELS' s JCPY. 



