VOL. LV.] ESTABLISHED BY EDWARD L. YOUMAMS. [No. 6. 



APPLETONS' 



POPULAR SCIENCE 



MONTHLY. 



OCTOBER, 1899. 

 EDITED BY WILLIAM JAY YOVMANS. 



CONTENTS. , Aa , 



I. The Help that Harms. Bishop POTTER 721 



II. Hopi Indians of Arizona. (Illustrated.) GEORGE A. DORSET.... 732 



III. Reform of Public Charity. Comptroller B. S. COLER 750 



IV. Christian Science from a Physician's Point of View. J. B. 



HUBER, M. D 755 



V. Wheat Lands of Canada. SYDNEY C. D. ROPER 766 



VI. Best Methods of Taxation. (Cone.) The late Hon. D. A. WELLS. . 778 



VII. Bacon's Idols ; a Commentary. Prof. WILLIAM H. HUDSON 788 



VIII. Mathematics for Children. (Illustrated.) M. LAISANT 800 



IX. Present Position of Sociology. F. SPENCER BALDWIN 811 



X. A Feathered Parasite. LEANDER S. KEYSER 822 



XI. Columbus Meeting of the American Association. Prof. D. S. MARTIN. 828 

 XII. Sketch of William Pepper (With Portrait.) LEWIS R. HARLEY.. 636 



XIII. Correspondence: "Do Animals Reason!" The Trend of Population in 



Maine 843 



XIV. Editor's Table : Education and Character-Building. The American Associa- 



tion at Columbus 847 



XV. Scientific Literature -. . 851 



XVI. Fragments of Science 857 



XVII. Index to Vol. LV. . . 865 



NEW YORK: 

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