ABSORPTION SPECTRA OF THE ALKALOIDS. 
507 
0-1 grm. in 25 cub. centims. 2 cub. centims. diluted to 8 cub. centims. —1 in 1000. 
Thickness of 
layer of liquid. 
Description of spectrum. 
Wave-lengths. 
millims. 
5 
Continuous to. 
3208 
4 
Continuous to. 
3171 
3 
Continuous to. 
3171 
2 
Continuous to. 
3171 
1 
Continuous to. 
3171 
Absorption band from. 
3171 to 2857 
Rays transmitted to. 
2831'5 
Absorption band from. 
2831-5 to 2427-5 
Rays transmitted to. 
2418 
2 cub. centims. of the last solution diluted to 10 cub. centims. =1 in 5000. 
Thickness of 
layer of liquid. 
Description of spectrum. 
Wave-lengths. 
millims. 
5 
Continuous to. 
3171 
Absorption band from. 
3171 to 2857 
Rays transmitted to. 
2793 
Absorption band from . •. 
2793 to 2424-3 
Rays transmitted to. 
2418 
4 
Continuous, strong to . 
3171 
Feeble absorption band. 
3171 to 2869 
Rays are transmitted feebly all through 
this band, and extend stronger 
from 2869 to. 
2740 
Absorption band from . 
2740 to 2568 
Rays transmitted to. 
2310 
3 
Continuous to. 
2310 
2 
Continuous to. 
2836-5 
Weak: to. 
2310 
Faint to. 
2259 
1 
Continuous to. 
2259 
Strychnine. Plate 56, fig. 6. 
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, strong to. 
2976 
4 
Continuous, strong to. 
2976 
3 
Continuous, strong to. 
2976 
2 
Continuous, strong to. 
2976 
Very faint to. 
2946 
1 
Continuous, strong to. 
2976 
Weak to. 
2946 
