THE 



SCIENTIFIC PROCEEDINGS 



OP THE 



ROYAL DUBLIN SOCIETY/J^''''^^ ^' ' "V^^^^ 



Vol. XVII, I.S., los. 20-24. J«m,'^^|%,v^e^v?>^ 



20.-O:Nr THE CAUSE OF EOLLING IN" POTATO FOLIAGE; AND 

 ON SOME FUKTHEE INSECT CAEEIEES OF THE LEAF- 

 EOLL DISEASE. By Paul A. Murphy, Sc.D,, A.E.C,Sc.I., Seeds 

 and Plant Disease Division, Department of Agricnlture and Technical 

 Instruction for Ireland. (Plate VI.) 



21.— ON THE CHANNELS OF TEANSPOET FEOM THE STOEAGE 

 OEGANS OF THE SEEDLINGS OF LODOICEA, PHCENIX, 

 AND VIGIA. By Henky H. Dixon, Sc.D., F.E.S., Professor of 

 Botany in the University of Dublin ; and Nigel G. Ball, M.A., 

 Assistant to the Professor of Botany in the University of Dublin. 

 (Plates VII-XI.) 



22.— lEEEGULAEITIES IN THE EATE OF SOLUTION OF 0:jfYGEN 

 BY WATEE. By H. C. Becker, A.E.C.Sc.I., A.I.C, Demonstrator 

 in Chemistry in the College of Science, Dublin ; and E. F. Pearson, 

 A.E.C.Sc.I., Eesearch Student. 



23.— THE HYDEOGEN ION CONCENTEATION OF THE SOIL IN 

 EELATION TO THE FLO WEE COLOUE OF HYDRANGEA 

 HOB.TENSIS W., AND THE AVAILABILITY OF lEON. By 

 W. E. G. Atkins, O.B.E., Sc.D., F.I.C. 



24.— THE COMPAEATIVE VALUES OF PEOTEIN, FAT, AND CAEBO- 

 HYDEATE FOE THE PEODUCTION OF MILK FAT. By E. J. 

 Sheehy, F.E.C.Sc.L.B.Sc. (Hons.), M.E.I.A., Biochemical Laboratory, 

 D. A.T.I. 



^Authors alone are responsible for all opinions expressed in tiieir Communications.'} 



DUBLIN: 

 PUBLISHED BY THE ROYAL DUBLIN SOCIETY, 



IJCINSTEK HOUSK, DUIilJN. 



WILLIAMS AND NORGATE, 

 H, HENRIETTA STREET, COVENT GARDEN, LONDON, W.C. 2. 



1923. 



Price Seven Shillings and Sixpence. 



