142 LITERATURE OF THE BPBCTR06COPE. 



On the spectrum of the zodiacal light. 



Wright i \ 'A AnhT. Jour. Sri.. (8) 



Chem., 154. 619-29. 



CJeber das Spectrum dee Nordlichtee. 



Zdllner (P.). Ber. Sachs. Gee. W\u. t 22. 264-260; Ann. Ph 

 Chem., 141. 674-681; Phil. Mag., I 41. 122-127; A.mer. Jour. 



1 72 Abs.). 



Spectrum of the aurora. 



Zdllner (P.). Nature, 7. 182-8. 



