



Produced by ellinora, Robert Tonsing, and the Online
Distributed Proofreading Team at http://www.pgdp.net (This
file was produced from images generously made available
by The Internet Archive/American Libraries.)









                             AËRIAL NAVIGATION

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

                                    BY

                  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
                              