490 
PROFESSOR W. N. HARTLEY ON THE 
O'l grin, in 10 cub. centims. of alcohol of sp. gr. 0'8. 
Thickness of 
layer of liquid. 
Description of spectrum. 
Wave-lengths. 
xnillims. 
5 
Continuous, strong to. 
2980 
Absorption band. 
2980 to 2747 
Rajs transmitted weakly to end at 
2572 
4 
Continuous, strong to. 
2949 
Absorption band. 
2949 to 2838 
Spectrum ends at. 
2572 
3 
Continuous to. 
2980 
Absorption band. 
2949 to 2870 
Spectrum ends at. 
2547 
1 
Continuous, bnt ratter weak .... 
2504 
Rajs transmitted feebly. 
2316 
Spectrum ends at. 
2316 
Morphine. From Macfarlan and Co., Edinburgh. Plate 54, fig. 6. 
O’l grm. in 25 cub. centims. of alcohol of sp. gr. 0’8. 
Thickness of 
layer of liquid. 
Description of spectrum. 
Wave-lengths. 
xnillims. 
5 
Continuous. 
3008 
4 
Same as five. 
3 
Continuous to. 
3008 
Absorption band. 
3008 to 2613 
2 
Continuous to. 
2980 
Absorption band. 
2980 to 2613 
Rays feebly transmitted to ... 
2570 
1 
Continuous to. 
3008 
Absorption band from. 
2980 to 2836 
Rays feebly transmitted to ... 
2570 
Solution of 0‘1 in 25 cub. centims. of alcohol of sp. gr. 0'8, diluted to four 
times its volume, equivalent to 1 in 1000. 
Thickness of 
layer of liquid. 
Description of spectrum. 
Wave-lengths. 
millims. 
4 
Continuous to. 
2980 
Absorption band from. 
2980 to 2836 
Rays feebly transmitted to ... 
2570 
3 
Continuous to. 
2980 
Absorption band. 
2980 to 2857 
Rays transmitted feebly at ... 
2570 
2 
Continuous to. 
2980 
Absorption band. 
2980 to 2880 
Rays transmitted to. 
2542 
1 
Continuous to. 
2980 
i 
Very feebly continuous to .... 
2542 
