PHOSPHORESCENCE — PHOTOGRAPHS. 331 



Trowbridge, C. C. Sci. 9 (1899) 245-249. 



, /., and J. E. Burbank. Phil. Mag. (5) 45 (1898) 100-102. 



Verneuil, A. C.-R. 104 (1887) 501-504; Beibl. (1887) 438. 



— . C.-R. 106 (1888) 101-104, 1104-1107; Beibl. (1888) 476; 



(1889) 19. 



Villari, E. Nuov. Cim. (3) 29 (1891) 36-42; Beibl. (1891) 517. 

 Wadsivorth, F. L. 0. Astrophys. J. 4 (1896) 308; 6 (1897) i53-i55- 

 Wiedemann, E. Ann. Phys. n. F. 34 (1888) 446-469. 

 . Eder's Jahrb. f. Photogr. 5 (1891) 587-591; Beibl. (1891) 



281. 

 Wolf, M., und P. Lenard. Eder's Jahrb. (1889) 8 pp.; Beibl. (1889) 



221. 

 Zettnow. Jahrb. f. Photogr. u. Reprod. 8 (1894) 323. 



PHOSPHORUS. 



Berghoff, V. Diss., Marburg, 1893; Beibl. (1895) 327. 



Gramont, A. de. C.-R. 122 (1896) 1534-1537. 



Kowalewski, W. A. Beibl. (1897) 968. 



Lommel, E. Sitzb. Mtienchener Akad. (1888) 397-403. 



McClean, F. Soc. frang;. de phys. (1892) 165-166. 



Niewenglowski, G. H. C.-R. 122 (1896) 232-233. 



Pedler, A. J. Chem. Soc. 57 (1890) 599-613; Beibl. (1890) iioi. 



Thorpe, T. E. Proc. Roy. Inst. Gt. Brit., March 14, 1890; Beibl. 



(1890) 622. 



Wilson, Benj. London 1 7 7 5 , 4to. " The more refrangible rays excite 

 the phosphorescence of sulfuret of lime, but the less refrangible 

 ones extinguish it when shining." 



Zecchini, F. Gazz. chim. Ital. -^^ (1893) 97-109, 109-121; Beibl. 

 (1893) 741. 



. Gazz. chim. Ital. 34 (1894) 34-42; 37 (1897) 358-384. 



PHOTOGRAPHS OF THE SPECTRUM. 



Abney,W.deW. Proc. Roy. Soc. 60 (1896) 13-15 ; Beibl. (1897) 981. 

 Angstrom, K. Phys. Rev. 3 (1895) 138-141; Beibl. (1896) 196. 

 Baldcock, J. H., and A. Rood. Brit. J. Photogr. 42 (1895) 805-806. 

 Baldivin, C. W. Phys. Rev. 3 (1896) 370-380, 448-458. 

 Bonacini, C. Mem. Spettr. Ital. 23 (1894) 146-154. 

 Bothamley, C. H. Chem. Industr. J. (Manchester, Eng.) (1887) 423; 



Jahresb. (1887) 2723. 

 . Engineering 60 (1895) 566. 



