SCIENTIFIC FROGEEmN G8—aontmued. 



23. The Hydrogen Ion Concentration of the Soil in relation to the Flower Colour 



of Hydrangea Hortensis W., and the Availability of Iron. By W. E. G. 

 Atkins, o.b.b., sc.d., f.i.c. (June, 1923.) 



24. The Comparative Values of Protein, Fat, and Carbohydrate for the Production 



of Milk Fat. By E. J. Huw ' '^3.1., b.sc. (hons.), m.h.i.a., Biochemical 

 Laboratory, D.A.T.I. (Ju . 



[Nos. 2b ■ .. 7s. 6d.] - 



25. The Utilisation of MonomethylaniUue in the ProdTiction of Tetryl. By 



Thomas Joseph Nolan, d. so., f.i.c, and Henky W. Clapham, Nobel Eesearch 

 Laboratories, Ardeer. (Communicated by Prof. H. Eyan.) (July, 1923.) 



26. Evidence of Displacement of Carboniferous Strata, Co. Sligo. By Arthur 



E. Claek, B.A., Trinity College, Dublin. (Communicated by Mr. L. B. 

 Smyth.) (July, 1923.) 



27. On a Problematic Structure in the Oldhamia Eocks of Bray Head, County 



Wicklow. By Louis B. Smyth, m.a., so.b. (Plate XII.) (July, 1928.) 



28. The Hydrogen Ion Concentration of the Soil and of Natural Waters in 



relation to the Distribution of Snails. By W. E. G. Atkins, o.b.e., sc.d., 

 F.I.C, and M. V. Lebour, d.sc (July, 1923.) 



29. Improved Methods of Evaporation in the Laboratory. By H. G. Becker, 



A.E.csc.i., A. I.e., Demonstrator in Chemistry, College of Science, Dublin. 

 (August, 1923.) 



30. A Eapid Gasometrio Method of Estimating Dissolved Oxygen and -Nitrogen 



in Water. By H. G.' Bkckke, a.r.c.sci., a.i.c, and 'W. E. Abbott, 

 A.R.G.sc.i., a.i.c, b.sc (August, 1923.) 



31. Ligneous Zonation and Die-Back in the Lime {Citrus mcdica, var. Acida) in 



the West Indies. By T. G. Mason, m.a., scd., Botanist, West Indian 

 Agricultural College. (Plates XIII-XVL) (August, 1923.) ._ .,: 



[Nos. 25 to 31, price Qs. 6c?.] 



32. On the Extraction of Sap from living Leaves by means of Compressed Air. 



By Henry H. Dixon, sc.d., f.k.s.. Professor of Botany in the University of 

 Dublin ; and Nigjsl G. Ball^ m.a.. Assistant to the Professor of Botany, 

 University of Dublin. (December, 1923.) 



83. Some Experiments on the Convection of Heat in Vertical Water Columns^ 



By H. H. Poole, scd. (December, 1923.) 



84. On the supposed Homology of the Golgi Elements of the Mammalian Nerve 



Cell, and the Nebenkern Batonettes of the Genital Cells of Invertebrates. 



By F. W. Eogers Brambell, b.a., sc.d. (dubl.), and J. Bronte Gatenby, 



M,A. (dubl.), D.PHIL. (oxoN.), D.SC. (lond.) (Plate XVII.) (December, 



1923.) 

 35. Phototropic Movements of Leaves — The Functions of the Lamina and the 



Petiole with regard to the Perception of the Stimulus. By Nigel G. Ball, 



ji.A., Assistant to the Professor of Botany in the University of Dublin.^ 

 . . (December, 1928.) 

 86. The Action of the Oxides and the Oxyacids of Nitrogen on Phenylbenzylether. 



By Hugh Eyan, d.sc, and John Keane, ph.d., University College, Dublin. 

 -. (February, 1924.) 



37. The Action of the Oxides and the Oxyacids of Nitrogen on Ethyl-^S-Naphthyl- 

 -: ether. By Hugh Eyan, d.sc, and John Keane, ph.d.. University Colleger 



-Dublin. (February, 1924.) 



38. The Action of the Oxides and the Oxyacids of Nitrogen on Diphenylethylene- 



ether. By Hugh Eyan, d.sc, and Terence Kenny, m.sc, University 

 College, Dublin. .(February, 1924.) 



39. The Action of the Oxides and the Oxyacids of Nitrogen on Diphenylether. 



By Hugh Eyan, d.sc, and Peter J. Dbumm, m.sc, University College, 

 Dublin. (February, 1924.) 



40. The Action of the Oxides and the Oxyacids of Nitrogen on Diphenylene 



Oxide. By Hugh Eyan, d.sc, and Nicholas Collinane, ph.d., University 

 College, Dublin. (March, 1924.) 



41. The Ha'bitats of Limnaea truncatula and L. ixreger in relation to Hydrogen 



Ion Concentration. By W. E. G. Atkins, o.b.e., f.i.c, and Makie 

 V. Lebour, d.sc, Marine Biological Laboratory, Plymouth. (February, 

 1924.) 



[Nos. 32 to 41, price 5s. 6rf.] 



OUItl.IN : PKINTKI) A r THE UNIVRKSITY PHKSB BY J-ONSONHY AND OlhKS. 



