ABSORPTION SPECTRA AND CHEmCAL CONSTITUTION. 



155 



chloride of ethyl o-aminophenol. Its'; structural formula is therefore 

 CtiH4<^^ ^ - °'^C0.'^ The ether prepared by the second method, on 



Scale of Oscillation Frequencies. 



Curves of Molecular Vibrations. 



Ethyl a-, /3-, and y-dibenzoylsucciuates. a and a' are the curves of the a-ester, the former when the 

 substance was freshly prepared, the latter when It had been kept for three weeks. The curves of the /3- 

 and y-esters are identical, and are shown as one, |3, y. 



treatment with concentrated hydrochloric acid, yields o-oxycarbanil. It is 

 therefore a lactim of the constitution C(;H4<^q^C-OC2H5. 



' Bender, loc. cit. 



