CHAPTER VI
THE DEVELOPMENT OF ELECTRIC RAILWAYS
(pp. [179]–1[81]). Early experimental railways. The quotation is from the article on "Street and Electric Railways," by Thomas Commerford Martin, in the Special Report of the U. S. Census Office on Street and Electric Railways, Washington, 1905.
CHAPTER IX
NAVIGATING THE AIR
(p. [247]). Henson's studies of the flying-machine. The quotation is from Travels in Space, by E. Seton Valentine and F. L. Tomlinson, New York, 1902.
CHAPTER X
THE TRIUMPH OF THE AEROPLANE
(p. [275]). How the air supports a heavier-than-air mechanism. The quotation is from an article on "The Flying Machine," by Professor S. P. Langley, in McClure's Magazine for June, 1897.
(p. [284]). Langley's aerodrome. The description is from Professor Langley's own account in McClure's Magazine, above cited.
(pp. [289], [290]). Experiments of the Wright brothers. The quotation is from an article on "The Wright Brothers' Aeroplane," by Orville and Wilbur Wright, in The Century Magazine for September, 1908.
(p. [298]). Cross-country Bight by French officers. The quotation is from the Scientific American of June 18, 1910. This periodical has shown great interest in the new science of aeronautics, and was the first to offer a trophy for long-distance flying—a trophy that was won for the years 1908 and 1909 by Mr. Glenn H. Curtiss. The Wright brothers have declined to compete for prizes; otherwise "records" for cross-country flying and the like would doubtless have advanced even more rapidly than has been the case.