DENSITY DIFFRACTION. 277 



Traube, J. Ber. chem. Ges. 29 (1896) 2731-2742, 

 Villard, P. Soc. franj. de phys. (1896) 73-82. 

 Walter, B. Ann. Phys. n. F. 34 (1888) 316-326. 



DIAMOND. 



Kunz, G. F. Beibl. (1891) 650. 



Sella, A. Beibl. (1892) 423. 



Walter, B. Jahresb. d. Hamburger wiss, Anstalt 8 (1891) 5 pp. 



DIDYMIUM. 



Bailey, G.H. Rept. Brit. Assoc. (1887) 654; Ber. chem. Ges. 20 



(1887) 2769-2770. 

 Becquerel, H. Ann. chim. phys. (6) 14 (1888) 257-279, planche. 

 Boishaudran,F. Lecoq de. C.-R. 105 (1887) 258, 301; Beibl. (1887) 



786. 

 Crookes, W. Chem. News 60 (1889) 27. 

 Demargay, E. C.-R. 105 (1887) 276; Beibl. (1887) 353; Ber. chem. 



Ges. (1887) 533- 

 Dimmer, G. Sitzb. Wiener Akad. 106 (1897) 1087-1102; Beibl. (1898) 



481. 

 Forsling,S. Bih. Svensk. Vet. Akad. Handl. (1893) 23 pp.; Beibl. 



(1894) 562. 

 . Bih. Svensk. Vet. Akad. Handl. (1898) No. 5 ; Beibl. (1899) 



484. 

 Hartinger, L. Monatsch. f. Chem. 12 (1891) 362-367; Beibl (1892) 



150. 

 Krilss, G. Liebig's Ann. 265 (1891) 1-27. 

 Langmuir, A. C. Index to Didymium, Smithsonian Misc. Coll. No. 



972 (1894) 20 pp. 

 Linnemann, E. Monatsh. f. Chem. 6 (1885) 531-536- 

 Liveing, G. D. Cambridge Proc. 10 (1899) 40-44; Beibl. (1899) 782. 

 Lohse, O. Astrophys. J. 6 (1897) 95-118. 

 Schottlaender . Ber. chem. Ges. 25 (1892) 368-394, 569-599. 



DIFFRACTION. 



Bose, J. C. Proc. Roy. Soc. 60 (1896) 167-178. 



Cesaro, E. Nuov. Cim. (3) 28 (1890) 5-10; Beibl. (1891) 521. 



Cinelli, M. Nuov. Cim. (4) i (1895) Mi-iSS; Beibl. (1895) 788. 



