Ferris, Richard. [from old catalog] · New York, T. Nelson and sons · leaf 80
the biplane and the mono-plane. The appearance of other forms has beensporadic, and they have speedily disappeared with-out accomplishing anything which had not been bet-ter done by the two classes named. This fact, however, should not be construed asproving the futility of all other forms, nor… … 2 80 FLYING MACHINES: THE BIPLANE. engaged; and this^ surely, is not the field of useful-ness to humanity which the ships of the air may beexpected ultimately to occupy. It may yet be provedthat, successful as these machines have been in whatthey have attempted, they are but transition formsleading…
Aeronautics
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