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

[Rhythms and Geologic Time]	339
[The Photography of Sound Waves]	354
[The Psychology of Red]	365
[Chapters on the Stars]	376
[Colonies and the Mother Country (III)]	390
[Causes of Degeneration in Blind Fishes]	397
[The Evolution and Present Status of the Automobile]	406
[Scientific Results of the Norwegian Polar Expedition, 1893–1896]	420
[Discussion and Correspondence]	436
[Scientific Literature]	439
[The Progress of Science]	442

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