292 BELL SYSTEM TECHNICAL JOURNAL 



Kingdon and Langmuir, Phys. Rev., 22, 148, 1923. 



Res. Staff G. E. (London), Phil. Mag., 45, 98, 1923. 



K. Lauch, A7in. d. Phys., 74, 55, 1924. 



S. S. MacKeown, Phvs. Rev., 23, 85, 1924. 



L. R. Ingersoll and S. S. de Vinney, Phys. Rev., 26, 86, 1925. 



J. Alazur, Bull. Acad. Polonaise, 81, 1925. 



H. Dewhurst, Phvs. Soc, 39, 39, 1926. 



\. Guntherschutze, Zeit f. Phys., 36, 8, 563, 1926. 



L. A. Fourdes, Ind. Assoc. Cult. Set. Proc, 323, 1926. 



A. Guntherschutze, Zeit.j. Phys., 38, 8, 575, 1926. 



E. Blechaschmidt, Ann. d. Phvs., 81, 999, 1926. 



A. V. Hippel, Ann. d. Phys., 80, 7, 672, 1926. 



F. Joliot, Compt. Rend., 196, 1926. 



"Cathode Disintegration," Engineering, p. 410, 1927. 

 F. W. Warburton, Phys. Rev., 30, 673, 1927. 



B. Steinberg, Phys. Rev., 29, 352, 1927. 

 A. Andant, Rev. d'Optique, 6, 364, 1927. 



A. Andant, Rev. d'Optique, 6, V. 81, 1043, 1927. 



T. Baum, Zeit f. Physik, 40, 9, 686, 1927. 



A. Ferry, Jour. de. Phys. 9, 39, 1928. 



A. Ferry, Compt. Rend , 187, 1928. 



H. Nagaoka and T. Fretagami, Imp. Acad. Tokyo Proc, 4, p. 20, 1928. 



L. R. Ingersoll and L. O. Sordahl, Phvs. Rev., 32, 649, 1928. 



R. S. Bartlett, Phyl. Mag. 5, 848, 1928. 



L. R. Ingersoll and J. D. Hanawalt, Phvs. Rev., 34, 972, 1929. 



T. Asada and K. (Juasaborth, Zeit. f. Phvs. Chem., 143, 5-6, 1929. 



Sophie Dembenska, Zeit. f. Phys., 54, 1 and 2, 1929. 



F. Smith, U. S. P., 1, 710, 747, 1929. 



A. Knapp, Am. Cer. Soc. Jour., 13, No. 11, 1930. 



L. R. Ingersoll, Nattire, 126, 204, 1930. 



L. Van Atta, Rev. Set. Inst., 1, 687, 1930. 



F. Joliot, Compt. Rend., 190, 627, 1930. 



E. Perucca, Ann. d. Phys., 4, 2, 252, 1930. 



C. H. Cartwright, Rev. Set. Inst., 1, 758, 1930. 



F. Joliet, Ann. d. Phys., 15, 418, 1931. 



Klemensiewicz and Waswicz, Zeit. j. Phys., 71, 11 and 12, 817, 1931. 



