532 Dr. Herschel's Experiments on the solar, and 



Table VII. 







Substances Without Colour. Transmission. 



Stoppage. 



Bluish-white glass 



>9*4 



86 



Flint glass - 



>9 66 



34 



Crown glass - 



,797 



203 



Coach glass - 



,832 



168 



Iceland crystal - 



,850 



150 



Talc - 



,91° 



9° 



Easily calculable talc 



,712 



288 



Glasses of the prismatic colours. 







Very dark red glass 



,0001335 - 



999>9 



Dark-red glass - 



,000188 



999$ 



Orange glass - 



,221 



779 



Yellow glass - 



,681 



3*9 



Pale-green glass 



A 6 5 



535 



Dark-green glass 



,051 1 



949 



Bluish-green glass - 



,231 



769 



Pale-blue glass 



,S l6 



684, 



Dark-blue glass 



,199 



801 



Indigo glass 



,000281 - 



999,7 



Pale-indigo glass 



,0218 



978 



Purple glass - 



,00675 - 



993 



Violet glass - 



,0452 



955 



Liquids. 







Empty tube and two glasses 



>79 6 



204 



Well-water and ditto 



789 



211 



Sea-water - 



,712 



288 



