874 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 55 



Walker, James. An account of a second series of experiments on the resist- 

 ance of fluids to bodies passing through them. 



Proc. Roy. Soc, Parts 2-3, 1831-1833, London, pp. 199-200. S (12613 



Walker, John Bkisben. The problem of aerial navigation. 



Cosmopolitan, Vol. 12, No. 5, 1892, New York, pp. 624-030, ill. S (12614 



Walker, T. A treatise on the art of flying by mechanical means with a full 

 explanation of the natural principles by which birds are enabled to fly, etc. 



Hull, 1810, 8% pp. 83, pi. 1. (12616 



Walker, Th. A treatise on the art of flying, by mechanical means; with a 

 full explanation of the natural principles by which birds are enabled to 

 fly: likewise instructions and plans for making a flying car with wings, 

 etc. 



New York, 1814, 32% pp. 64, pis. 2. (12616 



Walker, Thomas, portrait painter. A treatise on the art of flying, by 

 mechanical means; with a full explanation of the natural principles by 

 which birds are enabled to fly: likewise, instructions and plans for making 

 a flying car with wings, in which a man may sit, and, by working a small 

 lever, cause himself to ascend and soar through the air. Illustrated with 

 plates. By Thomas Walker. 



New York, Printed by S. Wood & Sons, 1816, xviii [19]-68 p., pi. 2. LC (12617 

 . A treatise upon the art of flying by mechanical means, with a full ex- 

 planation of the natural principles by which birds are enabled to fly; like- 

 wise instructions and plans for making a flying car with wings, .... 

 etc., Hull, 1810. 



Twelfth Annual Report of the Aeronautical Society of Great Britain, 1877, Green- 

 wich, pp. 27-69. S (12618 



. Treatise upon the art of flying by mechanical means, with full explana- 

 tion of natural principles by which birds are enabled to fly; instructions 

 and plans for making flying car with wings, etc. 



Aeronautical Annual, No. 1, 1895, Boston, pp. 49-81. S (1261» 



Walker, William George. Lifting power of air propellers, being experiments 



with propellers 30 ft. in diameter. 



Aer. Journ., Vol. 4, No. 16, 1900, London, pp. 156-161, tabs. 1-8. S (12620 



. The vertical screw aerial machine, with special notes on the lifting 



propellers. 



Aer. Journ., Vol. 9, No. 36, 1905, London, pp. 57-58. S (12621 



Walker's equilibrium regulator. 



Flying, No. 3 (June 1902), London, p. 116, ill. S (12622 



Wallin, B. H. Flugtechnik in Schweden. 



111. Aer. Mitt., XII Jahrg., 3 Heft (3 Feb. 1908), Berlin, pp. 52-55, figs. 1-4; 

 7 Heft (3 April), pp. 150-153, figs. 5-8. WB (12623 



. Flugtechnik in Schweden. 



111. Aer. Mitt., XH Jahrg., 15, 16 Heft (Juli, Aug. 1908), Berlin, pp. 424-429; 

 452-456, figs. 9-13. "WB (12624 



