Proceedings, Asiatic Society of Bengal, 1876. 



Plate I. 



Aa BC D Eb F 



G 



H 



Fig. 1, Solar Spectrum. 



7ig. 2. Absorption. Spectrura of Eosin in weak Watery solution 



Kg. 3. Atsorptioji Spectrum of Eosm m weak Alcoholic solution 



1 















L , 









2 













1 i 

 I 



! - 









Eig. 4. Absorption Spectrura of stained Bromised Collodion 

 (1. yon- T^iyore^crnt.— ^. li'lunresoeni. ■ 



fig. 5. Spectrum, as photographed, on stained dry bromide plate 



Fig. 6. Absoiption Spectrum of stained bromo-iodised Collodion 



^■i^K> m 















^^^m- 















^^^^^^Kk'l ■ . ^ 













■■ h'iMm^^^m 



Fig- 7. Spectrum as photographed on stained wet bromo-iodide plate 



lil^i 



Fig". 8. Speotrvir.i as photographed on unstairied wet (-•lomo-iodide plate 



