488 
PROFESSOR W. N. HARTLEY OH THE 
Cinchonine. From Mr. David Howard. Plate 54, fim 2. 
7 C> 
0’02 grm. in 20 cub. centims. of alcohol of sp. gr. 0'8, and 5 cub. centims. of double 
normal sulphuric acid. 
Thickness of 
layer of liquid. 
Description of spectrum. 
Wave-lengths. 
miliiins. 
5 
Continuous, strong to. 
3465 
Absorption band from .. 
3465 to2735 - 5 
Rays transmitted to. 
2569 
4 
Continuous to. 
3356 
Absorption band from. 
3356 to 2834 
Rays transmitted to. 
2569 
Spectrum ends at ....... 
2544 
3 
Continuous to. 
3356 
Absorption band from. 
3356 to 2834 
Spectrum ends at. 
2547 
2 
Continuous to. 
3260 
Absorption band from. 
3260 to 2860 
Spectrum ends at. 
2467 
i 
Continuous, strong to. 
3260 
Absorption band from. 
3260 to 3022 
Spectrum ends at. 
2467 
Quisidine Sulphate. From Mr. David Howard. Plate 54, fig. 3. 
0’02 grm. in 20 cub. centims. 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. 
millims. 
5 
Continuous to. 
3737 
Absorption band from. 
3737 to 2867 
Spectrum ends at. 
2660 
4 
Continuous to. 
3690 
Absorption band from. 
3690 to 2875 
Spectrum ends at. 
3 
Continuous to. 
3691 
Absorption band from. 
3691 to 2891 
Spectrum ends at. 
2644 
2 
Continuous to. 
3178 
Absorption band from. 
3178 to 3022 
Spectrum ends at. 
2644 
1 
Continuous, strong to. 
3606 
Continuous, weak to. 
3461 
Continuous, strong to. 
2628 
Spectrum ends at. 
2610 
