AËRIAL NAVIGATION

A POPULAR TREATISE
ON THE GROWTH OF AIR CRAFT AND
ON AËRONAUTICAL METEOROLOGY

Albert Francis Zahm, A.M., M.E., Ph.D.

SECRETARY OF THE AËRO CLUB OF WASHINGTON; GOVERNOR OF THE AËRO CLUB
OF AMERICA; GENERAL SECRETARY OF THE INTERNATIONAL CONFERENCES
ON AËRIAL NAVIGATION IN 1893 AND 1907; OFFICIAL AMERICAN
DELEGATE TO THE AËRONAUTIC CONGRESS OF 1900; FORMERLY
LECTURER ON MECHANICS IN THE UNITED STATES BUREAU
OF STANDARDS, AND PROFESSOR OF MECHANICS
IN THE CATHOLIC UNIVERSITY
OF AMERICA

NEW YORK AND LONDON
D. APPLETON AND COMPANY
1911

Published September, 1911

Printed in the United States of America