18 SCIENCE AND PHILOSOPHY. 



Comparative Literature. By Prof. II. M. Posnltt. International Scientiflc 



Series, r^mo. Cloth, $1.75. 



Science Primers. Edited by Professors Huxley, Eoscoe, and Balfour Stewart, 

 lamo. Flexible cloth, 45 cents each. 



Introuuotorv. By Prof. T. II. Huxley. F. R. 3. 



C£iEM[STRy. By Prof 11. E. Kosooe, F. K. S. 



Physics. By Prof. Balf^uk mewakt, F. E. S. 



Physical GEoyRAPiiv. By Prof. Ak( iiibald Geikie, P.R. S. 



Gejlouy. By Prol. Archibald Glikie, F. K. S. 



Physiology. By M. Kostkr, M. U., F. E. S. Hygieke. By E. S. Tracy. 



Astronomy. By .1. Nouman Lockyek, F. E. S. 



Botany. By Sir J D. Hooker, K. G. S. S., P. E. S. 



Logic. By Prof. W. S. Jevons. F. E. S. 



Inventional Geometry. By W. G. Spbncbk. 



Political Economy. By Prof W. S. Jevons, F. E. 8. 



Natural Ebsoukces of the United States. By J. II. Patton, M. A. 



Kational CosmologTr; or, the Eternal Principles, and the Necessary Laws of 

 the Universe. liy Hickok. Svo. Cloth, $2.00. 



The Science of Law. By Prof. Sheldon Amos, M. A. 12mo. Cloth, |1.75. 



THE POPULAR SCIENCE MONTHLY, 



Edited by W. J. YOUMANS, 



Contains articles l>y well-known -writers on all subjects of prac- 

 tical interest. Its range of topics, wliicli is widening with the 

 advance of science, includes : 



POLITICAL SCIENCE AND GOVEENMENT. 



DOMESTIC AND SOCIAL ECONOMY. 



EDUC.\TION. 



EELIGION AS IT IS BELATED TO SCIENCE. 



ETHICS, BASED ON SCIENTIFIC PEINCIPLES. 



8ANITAEY CONDITIONS; IITGIEXE; THE PEEVENTION OF DISEASE. 



AECHITECTFRE and AET in CONNECTION WITH PEACTICAL LIFE. 



THE DEVELOPMENT OF THE EACE. 



FOOD-PRODUCTS AND AOEICULTUEE. 



NATURAL HISTORY; SCIENTIFIC EXPLORATION. 



DISCOVEET; EXPERIMENTAL SCIENCE. 



THE PEACTICAL AETS. 



THE SCIENCE OF LIVING. 



It contains Illustrated Articles ; Portraits ; Biographical Sketches ; 

 records the advance made in every branch of science. It is not 

 technical ; it is intended for non-scientific as well as scientific 

 readers, for all persons of intelligence. 



Single Number, 50 cents. Yearly Subscription, $5.00. 



New York: D. APPLETON & CO., Publishers, 1, 3, & 5 Bond Street. 



