ABSORPTION SPECTRA OF THE ALKALOIDS. 
485 
No. 3. Aconitine. From Burgoyne, Burbidges and Co. Plate 53, fig. G. 
OT grm. in 20 cub. centims. of alcohol of sp. gr. 0'8. 
Thickness of 
layer of liquid. 
Description of spectrum. 
Wave-lengths. 
millims. 
5 
Continuous. 
2976-5 
4 
Continuous to. 
2863 
Absorption band from. 
2863 to 2613 
Rays transmitted at. 
2568 
3 
Continuous to. 
2863 
Weak, not continuous to .... 
2740 
Absorption band from. 
2740 to 2658 
Rays transmitted at. 
2568 
2 
Continuous to. 
2863 
Weak, but not continuous. 
2568 
1 
Continuous to. 
2493-5 
0'1 grm. in 100 cub. centims. of alcohol of sp. gr. 0‘8. 
Thickness of 
layer of liquid. 
Description of spectrum. 
Wave-lengths. 
millims. 
5 
Continuous to. 
2493-5 
4 
Continuous to. 
2476 
3 
Continuous strong to. 
2476 
2 
Continuous to. 
2472-5 
Spectrum extends feebly to ... 
2418 
1 
Continuous to.. 
2418 
There is a weakening of the spectrum between 2402 and 2310, but it can scarcely be 
called an absorption band. 
0*1 grm. in 500 cub. centims. of alcohol of sp. gr. 0*8. 
Thickness of 
la} er of liquid. 
Description of spectrum. 
Wave-length3. 
millims. 
5 
Continuous to. 
2418 
Weakening of the spectrum from. 
2387 to 2310 
Rays transmitted feebly to ... 
2259 
4 
Continuous to. 
2387 
Spectrum extends to. 
2145-9 
3 
Same as last. 
2 
Same as last, but stronger. 
2190 
1 
Continuous to. 
3 R 
MDCCCLXXXY. 
