ABSORPTION SPECTRA OF THE ALKALOIDS. 
481 
Foreign Aconitine. From Messrs. T. and H. Smith and Co. 
0‘2 grm. in 40 cub. centims. of alcohol of 0‘8 sp. gr. 
Thickness of 
lajer of liquid. 
Description of spectrum. 
Wave-lengths. 
millims. 
5 
Continuous to. 
2839 
4 
Continuous to. 
2839 
3 
Continuous to. 
2573 
2 
Continuous to. 
2547 
1 
The same spectrum, but stronger and 
extending to a faint ray .... 
2486 
Japaconitine. From Dr. C. R. A. Wright. Plate 53, fig. 3. 
0'2 grm. in 40 cub. centims. of alcohol of sp. gr. (P8. 
Thickness of 
layer of liquid. 
Description of spectrum. 
Wave-lengths. 
millims. 
5 
Continuous to. 
2861 
4 
Continuous to. 
2839 
3 
Continuous, strong. 
2861 
Absorption band. 
2799 to 2614 
Spectrum ends at. 
From 2614 to 2573 the spectrum is 
only very faintly visible. 
2573 
2 
Continuous. 
2747 
Absorption band. 
2747 to 2614 
Spectrum ends at. 
2573 
1 
Rays transmitted to. 
Remains of the absorption band are 
seen in the very weak transmission 
2547 
of rays lying between .... 
2747 and 2614 
0-8 
Rays transmitted to. 
2529 
0-6 
Rays transmitted to. 
2529 
0-4 
Rays transmitted to. 
2526 
0-2 
Continuous to. 
2429 
This substance gave the same spectrum after a solution in weak alcohol (proof 
spirit) had been kept for two years. 
