THE 



SCIENTIFIC PROCEEDINGS 



OF THE 



ROYAL DUBLIN SOCIETY. 



Vol. XVI. (N.S.), Uos. 21-24. ATIGTJST, 193L 



21.— THE CONCENTEATION AND PIJPJFIOATION OF ALCOHOLIC 

 PEEMENTATION LIQUOES. Paet L— The Distillation in 

 Steam of Certain Alcohols. By Joseph Eeilly, M.A., D.Sc.,, 

 M.E.LA., P. I.e., and "Wilered J. Hickinbottom, M.Sc, A.I.C. 



22.-THE "BEOWNING" AND " STEM-BEEAK" DISEASE OF 

 CULTIVATED FLAX [LINUM USITATISSIMUM], CAUSED 

 BY POLYSFOBA LINI n. gen. et sp. By H. A. Lafferty, 

 A.E.C.Sc.L, Assistant in the Seeds and Plant Disease Division, 

 Department of Agriculture and Technical Instruction for Ireland. 

 [Communicated by Dr. George H. Pethybridge, B.Sc] (Plates 

 VIII-X.) 



2.3.— A NEW PEINCIPLE IN BLOWPIPE CONSTEUCTION. By 

 H. G. Becker, A.E.C.Sc.L, A.I.C, Demonstrator in the Eoyal 

 College of Science, Dublin. 



24.— UNCHAEGED NUCLEI PEODUCED IN MOIST AIE BY 

 ULTEA-VIOLET LIGHT AND OTHEE SOUECES. By the late 

 Professor J. A. McClelland, F.E.S., and J. J. M'Henry, M.Sc, 

 University College, Dublin. 



[Authors alone are responsible for all opinions expressed in their Communications.^ 



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