390 A CENTURY OF SCIENCE 



11 W. Friedrich, P. Knipping, and M. Laue, Ann. d. Phys., 41, 971, 1913. 

 12 H. G. J. Moseley, Phil. Mag., 26, 1024, 1913, and 27, 703, 1914. 

 "E. W. Morley and D. C. Miller, Phil. Mag., 9, 680, 1905. 

 "17, 891, 1905. 



15 E. B. Wilson and G. N. Lewis, Proc. Am. Acad. of Arts and Sci.. 48, 

 389, 1912. 



18 R. A. Millikan, Phys. Rev., 7, 355, 1916. 



17 E. Rutherford, Phil. Mag., 21, 669, 1911. 



18 N. Bohr, Phil. Mag., 26, 1, 1913 et seq. 



