THE 



SClENTll IC PltOCEEDlNGS 



ROYAL DUBLIN SOCIETY. 



Vol. XVII, N.S., Kos. 33-41. MARCH, 1924. 



38.— ON THE EXTRACTION OF SAP FROM LIVING LEAVES BY MEANS OF 

 COMPRESSED AIR. By Henry H. Dixon, Sc.D., F.B.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. 



33.— SOME EXPERIMENTS ON THE CONVECTION OF HEAT IN VERTICAL 

 WATER COLUMNS. By H. H. Poole, Sg.D. 



34.— ON THE SUPPOSED HOMOLOGY OF THE GOLGI ELEMENTS OF THE MAM- 

 MALIAN NERVE CELL, AND THE NEBENKERN BATONETTES OF THE 

 GENITAL CELLS OF INVERTEBRATES. By F. W. Rogers Brambell, B.A., 

 Sc.B. (Duel.) ; and J. Bronte Gatenby, M. A. (Duel.), D.Phil. (Oxon.); D.Sc. (Lonb.). 

 (Plate XVII.) 



35.— PHOTOTROPIC MOVEMENTS OP LEAVES.- THE FUNCTIONS OF THE LAMINA 

 AND THE PETIOLE WITH REGARD TO THE PERCEPTION OF THE 

 STIMULUS. By Nigel G. Ball, M.A., Assistant to the Professor of Botany in the 

 University of Dublin. 



36.— THE ACTION OF THE OXIDES AND THE OXYACIDS OF NITROGEN ON 

 PHENYLBENZYLETHER. By Hugh Ryan, D.Sc; and John Keane, Ph.D., 

 University College, Dublin. 



37.— THE ACTION OF THE OXIDES AND THE OXYACIDS OF NITROGEN ON 

 ETHYL -^e-NAPHTHYLETHER. By Hugh Ryan, D.Sc; and John Keane, Ph.D., 

 University College, Dublin. 



38.— THE ACTION OF THE OXIDES AND THE OXYACIDS OF NITROGEN ON 

 DIPHENYLETHYLENEETHER. By Hugh Ryan, D.Sc. ; and Terence Kenny, M.Sc, 

 University College, Dublin. 



39.— THE ACTION OF THE OXIDES AND THE OXYACIDS OF NITROGEN ON 

 DIPHENYLETHER. By Hugh Ryan, D.Sc; and Peter J. Drumm, M.Sc, 

 University CoUege, Dublin. 



40.— THE ACTION OF THE OXIDES AND THE OXYACIDS OF NITROGEN ON 

 DIPHENYLENE OXIDE. By Hugh Ryan, D.Sc; and Nicholas Cullinane, Ph.D., 

 University College, Dublin. 



41.— THE HABITATS OF LIMNAEA TBUNCATULA AND L. PEBEGEB IN RELATION 

 TO HYDROGEN ION CONCENTRATION. By W. R. G. Atkins, O.B.E., F.I.C.f 

 and Marie V. Lebour, D.Sc, Marine Biological Laboratory, Plymouth. 



\_Auihors alone are responsible for all opinions expressed in their Communications.'] 



DUBLIN : 

 PUI5LJ811E1J EY TIJE liOYAL UU13LIN SOCIETY, 



],K1NSTEK H0U8IC, DUliMN. 



WILLIAMS AND NORGATE, ,- - --"^r""—-- -. 



M, HENRIKUTA STEEKT, COVENT GAUDEN, 1,0^'U()N,;^^«^'2. ^(f^- 



1924. )> 



Price Five Shillings and Sixpence. 



