Vol. XLIX.] Established by Edward L. Youmans. [No. 2. 



APPLETONS' 



POPULAR SCIENCE 



MONTHLY. 



JUNE, 1896. 

 EDITED BY WILLIAM JAY YOUMANS. 



CONTENTS. PA 



I. Principles of Taxation. II. Part V. By Hon. David A. Wells. . 145 



II. How the Great Lakes were Built. By J. W. Spencer, Ph. D., 



F. G. S. (Illustrated.) 157 



III. Dr. Nansen's " Throwing Stick." By John Murdoch 173 



IV. Co-ordination of our Educational Institutions. By Dr. E. H. Magill. 176 

 V. Frogs and their Uses. By R. W. Shufeldt, M. D. (Illustrated.) . 179 



VI. The Metric System. By Herbert Spencer 186 



VII. The Monetary Problem. By Logan G. McPherson 202 



VIII. Why Progress is by Leaps. By George Iles 216 



IX. Posthypnotic and Criminal Suggestion. By Prof. W. R. Newbold. 230 



X. Woman and the Ballot. By Alice B. Tweedy 241 



XL The Subterranean River MidroX. By Dr. Paul Raymond. (Ulus.) 253 

 XII. Our Southern Mocker. By I. W. Blake 258 



XIII. Sketch of James Blythe Rogers. (With Portrait.) 261 



XIV. Editor's Table : Intelligence in the Public Service. Decimal Computation. 



The Province of Science. Those Blessed X Rays 266 



XV. Scientific Literature 272 



XVI. Fragments of Science 281 



NEW YORK: 

 D. APPLETON AND COMPANY, 



73 FIFTH AVENUE. 

 Single Number, DO Cents. Yearly. Suusc-Rimon, $5.00. 



Copyright, 1896, by D. APFLETON AND OOMPJ I 



