APPLETONS' POPULAR SCIENCE MONTHLY

EDITED BY WILLIAM JAY YOUMANS

VOL. LIV NOVEMBER, 1898, TO APRIL, 1899

NEW YORK D. APPLETON AND COMPANY 1899

Copyright, 1899, By D. APPLETON AND COMPANY.

Vol. LIV.Established by Edward L. Youmans.No. 4.

APPLETONS' POPULAR SCIENCE MONTHLY.

FEBRUARY, 1899.

EDITED BY WILLIAM JAY YOUMANS.

CONTENTS.

PAGE

I.Vegetation a Remedy for the Summer Heat of Cities. By Stephen Smith, M.D., LL.D433

II.Mivart's Groundwork of Science. By Prof. Wm. Keith Brooks450

III.The Science of Observation. By Charles Livy Whittle. (Illustrated.)456

IV.Death Gulch, a Natural Bear-Trap. By T.A. Jaggar, Jr. (Illustrated.)475

V.The Labor Problem in the Tropics. By W. Alleyne Ireland481

VI.Principles of Taxation. XX. The Law of the Diffusion of Taxes. Part II. By the Late Hon. David A. Wells490

VII.The Great Bombardment. By Charles F. Holder. (Illustrated.)506

VIII.The Spirit of Conquest. By J. Novicow518

IX.A Short History of Scientific Instruction. II. By Sir J.N. Lockyer529

X.The Series Method: a Comparison. By Charlotte Taylor537

XI.The Earliest Writing in France. By M. Gabriel de Mortillet542

XII.Sketch of Gabriel de Mortillet. (With Portrait.)546

XIII.Correspondence: The Foundation of Sociology.—Evolution and Education again.—Emerson and Evolution553

XIV.Editor's Table: The New Superstition.—Emerson557

XV.Scientific Literature559

XVI.Fragments of Science569

NEW YORK: D. APPLETON AND COMPANY, 72 FIFTH AVENUE. Single Number, 50 Cents.Yearly Subscription, $5.00.

Copyright, 1898, by D. APPLETON AND COMPANY. Entered at the Post Office at New York, and admitted for transmission through the mails at second-class rates.

GABRIEL DE MORTILLET.

APPLETONS' POPULAR SCIENCE MONTHLY.

FEBRUARY, 1899.