MEMOIll 



JOHN DAL TON 



D.C.L., F.R S., 



INSTIT. (ACAD. 8C.) PAllIW. H0CIU8., 



PaESTDENT OF THE LITBUARY AND PUILOBOl'HICAL 80CIBTY OF 



MANCHUSTBtt, ETC., ETC. J 



HISTORY 



OF 



THE ATOMIC THEORY 



UP TO HIS TIME. 



BY 



ROBT. ANGUS SMITH, PH.D., F.C.S. 



SEC. TO THE LIT. AND PHIL. SOC. 



LONDON: 



H. BAILLIERE, 219, REGENT STREET, 



AND 290, BROADWAY, NEW YORK. 



PARIS : J. li. BAILLIERE, LIBRAIRE, RUE HAUTEFEUILLE. 



ISoG. 



