ABSORPTION SPECTRA OF THE ALKALOIDS. 
489 
Cinchonidine Sulphate. From Mr. David Howard. Plate 54, fig. 4. 
•02 grm. in 20 cub. ceiitims. of alcohol of sp. gr. 0 - 8, with 5 cub. centims. of double 
normal sulphuric acid added. 
Thickness of 
layer of liquid. 
Description of spectrum. 
Wave-lengths. 
xnillims. 
5 
Continuous to. 
3364 
Absorption band from. 
3364 to 2860 
Spectrum ends at. 
2614 
4 
Continuous to. 
3364 
Absorption band from. 
3364 to 2860 
Spectram ends at. 
2614 
3 
Continuous to. 
3348 
Absorption band from. 
3348 to 2860 
Spectrum ends at. 
2614 
2 
Continuous to. 
3258 
Absorption band from -. 
3258 to 2864 
Spectrum ends at. 
2569 
1 
Continuous, strong to. 
3258 
Absorption incomplete from .... 
3258 to 2907 
Spectrum ends at. 
2572 
Morphia. From Messrs. T. and H. Smith and Co. Plate 54, fig. 5. 
0‘1 grm. in 25 cub. centims. of alcohol of sp. gr. 0 - 8. 
Thickness of 
layer of liquid. 
Description of spectrum. 
Wave-lengths. 
millims. 
-5 
Continuous to. 
3008 
4 
Strong, continuous to. 
3008 
3 
Continuous to. 
2980 
2 
Strong, continuous to. 
3008 
Ratter weak to. 
2980 
Absorption band .. 
2980 to 2660 
Rays transmitted faintly to ... 
2572 
1 
Continuous to. 
2957 
Absorption band. 
2956 to 2747 
Rays transmitted to. 
2572 
