510 
PROFESSOR W. N. HARTLEY ON THE 
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, strong to. 
3825 
Weak to. 
3742 
Weak line at. 
3673 
4 
Continuous, strong to. 
3825 
Weak, continuous to. 
3706 
Faint to. 
3600 
8 
Continuous to. 
3600 
Absorption band from. 
3600 to 2740 
2 
Continuous to. 
3600 
Absorption band from. 
3600 to 2740 
Rays transmitted from. 
3600 to 3456 
Also from. 
2813 to 2568 
Absorption band from. 
2568 to 2310 
With two lines faintly transmitted at | 
2427-5 
2418 
1 
Continuous spectrum with indications 
of the absorption bands to . . . . 
2201 
Atropine. From T. and H. Smith and Co. 
0 - l grin, in 20 cub. centims. of alcohol of sp. gr. CPS. 
Thickness of 
layer of liquid. 
Description of spectrum. 
Wave-lengths. 
millims. 
20 
Continuous, strong to. 
2707 
5 
Continuous, strong to. 
2707 
Very faint as far as. 
2429 
4 
Continuous, strong to. 
2644 
Weak to. 
2573 
Very weak to. 
2429 
3 
Continuous, strong to. 
2573 
Rather weak to. 
2429 
Very faint extension to. 
2398 
2 
Continuous, strong to. 
2398 
Very faint to about. 
2355 
1 
Continuous, strong to. 
2398 
Weak to. 
2355 
Very faint to. 
2340 
