ox ABSORPTION SPECTKA AND CHEMICAL CONSTITUTION. 



16J 



Quinine.^ 

 C5oH,,N,0,,. M.P. 172-173°. 



Solution in Alcohol, 

 (Fig. 18.) 



Thickness of 



layer in 

 millimetres 



Description of Spectrum 



1 



\ 



4, 3, and 2 



1 milligravi-violeciile in 100 c.c. 



Spectrum tranamitted to 



1 milUgravi'moleculc hi 500 c.g. 



Spectrum transmitted to . . . 

 »» i» . • . 



lift Absorption hand .... 

 Weak spectrum from 3300 to 

 2nd Absorption band .... 

 Very weak spectrum from 3837 to 

 Si^ectrum transmitted to . . . 

 \t!t Absorption band .... 

 Spectrum from 3300 to . 

 2nd Absorption band .... 

 Spectrum transmitted from 3837 to 

 1st Absorption band .... 

 Lines faintly showing where the 2nd f 

 absorption band occurred . . | 



1 milligi-am-moleoHle in 2,500 c.c. 



Spectrum transmitted to . 



Weak in position of 1st absorption 



band. 

 Spectrum transmitted to . . . 

 Weak transmission in position of 1st , 



absorption band. i 



Spectrum practically all transmitted, ' 



but weak beyond. 



4006 



2496 



4038 i 2476 



4038 



2476 



QUINIDINE^ AND CUPEEINE, 



The spectra of quinidiiie and cupreine are identical with those of 

 quinine. 



IlYDllOaTJlNlNE. 



C,„IL,N.p,. 



The spectra of hydroquinine resembled those of quinine so closely that 

 no separate curve was drawn. 



' Hartle}-, Plul, Ttans,, 1885, Part II., p, 471. 



Hartley) loc. cit. 



1903. 



M 



