March, ,g,6 9, lO, 11, IS 



PROCEEDINGS 



OF THE 



ROYAL IRISH ACADEMY 



Volume XXXIII, Section B, Nos. 9, 10, 11, 12 

 XXX il 



HUGH EYAN and JOSEPH ALGAE. 

 IX. — Studies in the Diflavone Group. III. Derivatives of Dicoumaranone 



AND OF DlFLAVANONE. 



HUGH EYAN and MICHAEL J. WALSH. 

 X. — Studies in the Diflavone Group. IV. On Diveratrylidene-Dicou- 



MARANONE. 



HUGH EYAN and GEEALDINE PLUNKETT. 

 XL— On Unsaturated /3-Diketones. — III. 



HUGH EYAN and ANNIE DEVINE. 



XII. — On the Condensation of Aldehydes with Ketones. II. Aldehydes 

 with Methylethylketone. 



DUBLIN 



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