LITERATURE OF THE SPECTROSCOPE. 199 



Comparative vegetable chromatology. 



Sorby (H. C.). Proc. Royal Soc, 21, 442-83; Jour. Chem. Soc, (2) 

 12, 279-85 (Abs.). 



Sur la transparence des milieux de l'ceil pour les rayons ultra-violets. 



Soret (J. L.). Comptes Rendus, 88, 1012-15; Beiblatter, 3, 620 (Abs.). 



On combinations of colour by means of polarized light. 

 Spottiswoode (W.). Proc. Royal Soc, 22, 354-8. 



Farbenwahrnehmung. 



Weinhold (A.). Ann. Phys. u. Chem., n. F. 2, 631. 



De l'influence do differentes couleurs du spectre sur la devellopement des 

 animaux. 



Yung (E.). Comptes Rendus, 87, 998-1000. 



CONE-SPECTRUM. 



'The blowpipe cone-spectrum and the distribution of the intensity of light 

 in the prismatic and diffraction spectra. 

 Draper (J. W.).. Nature, 20, 301. 



