Transcriber's note
Cover created by Transcriber, using an illustration from the original book, and placed in the Public Domain.

A tornado near Elmwood, Nebraska. A painting made from what is probably one of the most remarkable photographs ever taken of a tornado. The original photograph was made in two parts, as the photographer was too close to get the whole funnel cloud into the field of his camera.

(Photograph by G. B. Pickwell)

Popular Science Library

EDITOR-IN-CHIEF
GARRETT P. SERVISS

AUTHORS

WILLIAM J. MILLER HIPPOLYTE GRUENER A. RUSSELL BOND
D. W. HERING LOOMIS HAVEMEYER ERNEST G. MARTIN
ARTHUR SELWYN-BROWN ROBERT CHENAULT GIVLER
ERNEST INGERSOLL WILFRED MASON BARTON
WILLIAM B. SCOTT ERNEST J. STREUBEL
NORMAN TAYLOR DAVID TODD
CHARLES FITZHUGH TALMAN
ROBIN BEACH

ARRANGED IN SIXTEEN VOLUMES
WITH A HISTORY OF SCIENCE, GLOSSARIES
AND A GENERAL INDEX

ILLUSTRATED