BIBLIOGRAPHY OF SELENIUM 249 



' 1898 



M inch in (Lum. e'lectr., 48, 543), Photo-electric cells. 



1894 



Marjorana (Rend. R. Ace. d. Line, 3, 183; and Beibl., 18, 930), 

 The rapidity of light action in selenium. 



1895 



Bidwell (Phil. Mag., 40, 233), The electrical properties of se- 

 lenium. 



Minchin (Proe. Roy. Soc, 58, 142), The use of selenium in 

 photometry. 



Bidwell (Mechaniker, 1895, p. 232), Telephotography. 



1896 



Giltay (Nature, 54, 109), Roentgen Rays and the resistance of 

 selenium. 



Marjorana (Beibl. z. d. Ann., 20, 558), Action of a periodically 

 interrupted light beam on selenium. 



1897 



Schmidt (Wied. Ann., 62, 407), Electrical phenomena in se- 

 lenium and fiourspar. 



Tammanu (Wied. Ann., 62, 280), Two melting points. 



1898 



Agostini (Forts, d. phys., 11, 592), The action of electro-mag- 

 netic waves on selenium. 



Dussaud (Compt. Rend., 128, 1132), Transmission of varying 

 light intensities by electric wires. 



Lekner (Journ. Am. Chem., S, 20, 555), Atomic weight. 



1899 



Dussaud (Compt. Rend., 128, 171), Transmission of tones by 

 ultra violet light. 



Liesegang (Edition 2, pamphlet on the problem of seeing at a 

 distance). 



Perreau (Compt. Rend., 129, 956), Effect of X rays on the re- 

 sistance of selenium. 



