Identifier: encyclopaediabri25kell (find matches)
Title: The Encyclopaedia Britannica; ... A dictionary of arts, sciences and general literature
Year: 1902 (1900s)
Authors: Kellogg, D. O. (Day Otis), 1796-1874 Baynes, T. Spencer (Thomas Spencer), 1823-1887 Smith, W. Robertson (William Robertson), 1846-1894
Subjects: Encyclopedias and dictionaries
Publisher: New York : Werner
Contributing Library: University of California Libraries
Digitizing Sponsor: Internet Archive

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a steamengine, with twin-screw propellers, and without gasor other lifting aid. Its total weight is about fortypounds. In November, 1898, the United StatesBoard of Ordnance appropriated $25,000 to enableProf. Langley to develop his ideas, with a view to theuse of his machine for war purposes. He has pub-lished a pamphlet on The Internal Workoftlu Wind,and shown that the wind is very uncertain, var>inganiazmgly in velocity within short periods of time.Kiedinger, Von Sigsfeld, and Von Parsfal, of Augs-burg, Bavaria, made extensive and costiv trials ofmodels designed for automatic flight. Charles H.Lamson and J. B. Millet have experimented withkites of the Hargrave type, and the former has in-wnted a multiplane folding kite. Professor Georgewellner, of Briinn, Austria, designed, in 1893, anairship to be supported by sections of tubing ofvery large diameter, within which rotate sail-wheelsot a peculiar pattern. He has patented these sail-wheels. Between 1S90 and 1S93 Horatio Phillips,
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^ A E R O P H O R E — A F G H A N I S T A N 57 of England, made many ex))eriinents with an aero-plane apparatus, which he wliirled around on a cir-cular track. His machine weighed 350 pounds, andhad a series of aeroplanes arranged somewhat likethe slats of a Venetian blind. These slats were 22inches wide, and curved in imitation of the wing ofan albatross. He constructed a propeller to drivethis machine, but never succeeded in making it self-sustaining. Other recent machines are the Zappe-lin air-ship and Santos-Dumonts dirigible balloon. Notable investigations on atmospheric move-ments have been made by Helmholtz of Berlin, andLord Rayleigh of England, each of whom has con-tributed to the literature on the subject. SeeAeronautics, Vol. I, pp. 185-207. AEROPHORE. See Coal, Vol. VI, p. 73. AEROPHYTES, plants which derive all theirsustenance from the air, as certain orchids andbromelias. Among the latter is the Tillandsia, orlong moss, of the South. For further description,see Epiphyt

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