SUPPLEMENT. 419 



Jahresber. d. Chemie (1883), 250, use of selenium in separating the heat 

 rays from the light and the chemical rays, by 

 F. van Assche. 

 " (1883), 251, absorption of the blood, by J. L. 



So ret. 

 " (1883), 251, sight of the ultra-violet rays by man 

 and by vertebrates, by De Chardonnet ; re- 

 marks by Mascart and by Soret. 



" " (1883), 252, absorption spectra of organic com- 



pounds, by G. Kriiss and S. Oeconomides. 



" " (1883), 253, dissociation of phosphorescence under 



the influence of the ultra-red rays, by H. Bec- 

 querel. 



" " (1883), 253, phosphorescence of sulphur, by H. 



Schwarz. 



" " (1883), 254, phosphorescence of organic bodies, by 



B. Radzizewski. 

 " (1883), 254, Stokes's Law of Phosphorescence, 

 maintained by Hagenbach against Lommel and 

 Lubarsch. 



" " (1883), 254, optical characteristics of the cyanides 



of platinum, by W. Konig. 



" " (1883), 258, sensitiveness of the salts of silver to 



light, by H. W. Vogel. 

 " (1883), 258, electro-chemical energy of light, by 



F. Griveaux. 

 « " (1884), 289, lines peculiar to solar light, by A. 



Cornu. 

 " " (1884), 294, displacement and inversion of the 



lines of the spectrum, by Ch. Fievez. 

 " " (1884), 295, cause of the displacement of the lines 



of the spectrum, by E. Wiedemann and W. N. 



Hartley. 

 " " (1884), 283, measurement of wave-lengths, by H. 



Merczyng. 

 « « (1884), 289, 290, wave-lengths and refraction in 



the invisible part of the spectrum, obtained 



with the bolometer of his own invention and 



with a very large Rowland convex grating, by 



S. P. Langley. 



