54 CHEMISTRY 



5412 Roscoe, Sir H. E., and Harden, A. New view of 

 origin of Dalton's atomic theory. Lond. 1896. 



5412 Smith, E. F., and Van Haagen, W. K. Atomic weights 

 of boron and fluorine. Wash. 1918. 



/. '5412 Stas, J. S. Nouvelles recherches sur les lois des pro- 

 portions chimiques, sur les poids atomiques et leurs 

 rapports mutuels. [1865.] 



5412 Wurtz, A. The Atomic theory. Lond. 1880. 



5412 Young, S. Stoichiometry. Lond. 1908. 



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54121 RADIOACTIVITY. 



Barus, C. Condensation of vapor as induced by nuclei 

 and ions. Wash. 1907. 



Nucleation of the uncontaminated atmosphere. 



Wash. 1906. 



Battelli, A., and others. La Eadioactivite. 



Geneve [1910]. 



Blondlot, R. " N " rays. Lond. 1905. 



Bragg, W. H. Studies in radioactivity. Lond. 1912. 



Congres international pour 1'etude de la radiologie, 



Liege, 1905. Comptes rendus. Paris 1906. 



Crowther, J. A. Ions, electrons, and ionizing radia- 

 tions. Lond. 1919. 



Curie, M. S., Madame. Eecherches sur les substances 



radioactives. 



- Traite de radioactivity. 



2 vols. 



Paris 1904. 



Paris 1910. 

 Lond. 1909. 



Leip. 1903. 

 Lond. 1914. 



D'Albe, E. E. F. The Electron theory. 

 Hofmann, K. Die Eadioactiven Stoffe. 

 Kaye, Q. W. C. X rays. 

 Laborde, A. Methodes de mesure employees en radio- 

 activite. Paris [1911]. 



Lenard, P. Uber Kathodenstrahlen. Leip. 1906. 



Makower, W., and Qeiger, H. Practical measure- 

 ments in radio-activity. Lond. 1912. 



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