Transcriber’s note: Table of Contents added by Transcriber.

[Preventive Inoculation]	115
[Professor Ewart's Penycuik Experiments]	126
[Colonies and the Mother Country]	139
[The Future of the Negro in the Southern States]	147
[The Physical Geography of the Lands]	157
[The New York Botanical Garden]	171
[Gas and Gas Meters]	179
[The Sun's Destination]	191
[A Biographical Sketch of an Infant]	197
[Correspondence]	206
[Scientific Literature]	213
[The Progress of Science]	219

THE
POPULAR SCIENCE
MONTHLY

EDITED BY
J. McKEEN CATTELL

VOL. LVII
MAY TO OCTOBER, 1900

NEW YORK AND LONDON
McCLURE, PHILLIPS AND COMPANY
1900

CONTENTS