| | | elevator 12 feet. ---------------------------+--------------------+----------------------+------------------ For full details of the tractor (F) see _Aeronautics_, U.S.A., February, 1913. [Illustration: 1913 Tractor. Type F.] [Illustration: 1912 flying boat. _By favor of "Aeronautics," U.S.A._] [Illustration: Curtiss. 1913 flying boat. UAS.] ~G~ GALLAUDET. Gallaudet Eng. Co., Norwich Ct. [Illustration] In 1912 produced a special racer as above. ~Span~, 32 feet (9.75 m.) ~Area~, 200 sq. feet (18-1/2 m squared.) ~Speed~, 100 m.p.h. (160 k.p.h.) ~Motor~, 100 Gnome. ~K~ KIRKHAM Biplanes. Chas. B. Kirkham, Motor Manufacturers, Savona, N.Y. Began to manufacture aeroplanes in 1912, after previous experiments and flights near his factory. ~Length~, ? feet ( ? m.) ~span~, 34 feet (10.40 m.) ~surface~, ? sq. feet ( ? m squared.) ~Weight.~--Complete, _without pilot_, 980 lbs. (445 kgs.) ~Motor.~--50 h.p. Kirkham, located in front under bonnet. 70 h.p. also fitted. ~Speed.~--56-62 m.p.h. (90-100 k.p.h.) Remarks.--Rises easily at under 35 m.p.h., and has a full speed radius of 5-1/2 hours. Full details in _Aeronautics_, U.S.A., January, 1912. 1913, no changes. [Illustration] ~L-S~ LOENING. Monoplane aero boat, with one very deep step. See _Aeronautics_, U.S.A., May-June, 1912. SELLERS. Quadruplane. Matthew B. Sellers, R.F., D2, Norwood, Ga. Has been successfully experimenting for a number of years with a staggered quadruplane, and has given the aviation world a number of valuable papers. His aim is to fly successfully with the least possible horse power. For several years he has been making flights with various engines delivering from 5 to 6 h.p. on careful test. The actual thrust has been measured and recorded in late 1911 experiments. Details in _Aeronautics_, June, 1909; October, 1909; November, 1910; January, 1911; January, 1912. No actual details of the machine are available, but it follows closely the patent drawings (see references). He is one of the few real scientific flying men in the U.S.A. The original machine with slight changes was still flying at end of 1912 with only 5 h.p. B.H.P. The flying speed is 20 m.p.h. [Illustration] SLOANE. Sloane Aeroplane Co., 1733, Broadway, New York. Established 1911. Agents for _Caudrons_ and _Deperdussins_. Run a school for these. ~T-V~ THOMAS Biplanes. Thomas Bros., Bath, N.Y., O.W., and W.T. Thomas began experimenting and flying in 1908 with a machine on the order of a _Curtiss_. In the winter of 1909-10, a type of their own was produced and was flown during 1911 by Walter Johnson in exhibitions. In 1912 they continued the same type, with refinements. In 1913 they adopted the overhanging top plane type, but of the same general high order of construction.