244 THE HISTORY OF SCIENCE 



REFERENCES 



Alexander Graham Bell, Experiments in Mechanical Flight, 

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Alexander Graham Bell, The Pioneer Aerial Flight, Scientific 

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S. P. Langley, Experiments in Aerodynamics. 



S. P. Langley, The "Flying Machine," McClure's, June, 1897 

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Langley Memoir on Mechanical Flight, Smithsonian Contributions 

 to Knowledge, vol. 27, no. 3 (illustrated). 



Scientific American, Jan. 13, 1912, A Memorial Honor to a 

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The Smithsonian Institution 1846-1896. The History of its First 

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A. F. Zahm, The First Man-carrying Aeroplane capable of Sus- 

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