116 REPOET OF NATIONAL MUSEUM, 1921. 



sented by the Willys-Overland Co., Toledo, Ohio, through Mr. John 

 N. Willys, president. 



Through the efforts of Mr. E. H. Sithens, Millville, N. J., in pro- 

 curing two " ordinary " bicycles, one a " Columbia " and the other a 

 " Victor," the collection of bicycles was greatly enhanced, and now 

 includes 12 distinct types ranging from about the first introduction in 

 1863 to the " new rapid safety," introduced about 1887. Mr. Ransom 

 Matthews, Selma, Calif., added to his collection of gasoline engine 

 spark plugs loaned to the Museum, which now embraces a total of 150 

 different types of plugs. 



The collection being assembled to visualize the development in 

 aeronautics was considerably improved by the gift of the experi- 

 mental hydroplane model made by Mr. Edson F. Gallaudet in 1898, 

 and used by him in the fall of that year in experimental aeronautical 

 work on Long Island. The model was presented to the Museum by 

 the Gallaudet Aircraft Corporation, East Greenwich, R. I. 



During the year Mr. George W. Spier, of Washington, D. C, 

 custodian of watches, donated eight valuable specimens of early time- 

 pieces, both of American and European manufacture. They are in- 

 corporated in the horological collections which are being arranged to 

 illustrate the mechanical developments in this art. In this connec- 

 tion, an important watch was donated by John J. and Charles E. 

 Bowman, Lancaster, Pa. It is No. 49 of 50 watches made about 40 

 years ago by the donors' father, Ezra F. Bowman. One of its most 

 interesting features is that it is regulated by timing screws rather 

 than the usual type of regulator, so as to avoid the disturbance of its 

 isochronal adjustment. The watch is also of a smaller design than 

 the customary watch carried in that day and was a pioneer of the 

 now established smaller and more convenient watch. The many parts 

 used in the construction of several of the models of Hamilton 

 watches, all attractive!}^ mounted in a massive framework, was re- 

 ceived as a gift of the Hamilton Watch Co., Lancaster, Pa. This ex- 

 hibit, placed with a part of the collection of watches on exhibition, 

 adds materially to the instructive features of the horological collec- 

 tions. 



Mr. Emile Berliner, Washington, D. C, presented two gramo- 

 phones of importance in the developments of the talking machine. 

 One is the first commercial type of machine brought out in 1893, and 

 the other is an electrically operated machine devised by Mr. Ber- 

 liner in 1896. Another valuable educational exhibit received during 

 the year was that prepared by the Royal Typewriter Co., New York. 

 The exhibit consists of four objects which illustrate the structural 

 features of the typewriter generally, with particular reference to the 

 Royal. This is done by means of a sectional or skeleton model of 



