164 



tlEPORT— 1903. 



Thickness of 



lajei- in 

 niillinietrea 



50, 40, and 30 



20 



10 and 8 



6 



4 



5 and 4 



3 

 2 



.5 



4 to 1 



COKTBTJLBINE. 



C,,H„,NO,. M.P, 223-225^. 



Solution m Alcohol. 

 (Fig. 200 



Description of Specttum 



1 milUgra'nl-vwlecule in T.OOO c.c 



Spectrum trauMiiitted to . . . 

 >) 11 ■ • • 



II I) ... 



Ahaorption hand ..... 



Rather feeble spectrum from 3815 to . 



Spectrum transmitted to . . . 



Absorption hand 



Spectrum fesbly transmitted from 3710 to 



Spectrum transmitted to . . . 



Ahsorjitioii hand , . , 



Weak spectrum from 3638 to 



1 milligram-molecule in 2,500 c.c. 



Spectrum transmitted to . . . 4117 



Very weak in iiosition of absorption 



band. 



vSpectrum transmitted to . . . 4403 



Very weak beyond .... 4117 



Same as 3 mm., with additional line 



showing at 4495 



1 inillifjram- molecnle in 12,500 c.c. 



Spectrum transmitted to . . . : 4549 

 Spectrum all transmitted. 



2128 



2271 



2428 



2224 



2198 



BuLBOCArNIN. 



C,,,H,,,NOj. M.P. 201". 



Solution in Alcohol. 

 (Fig. 21.) 



