Contents. v 



No. PAGE. 



21. On the Channels of Transport from the Storage Organs of the 



Seedlings of Lodoicea, Phoenix, and Vicia. By Henry H. 

 Dixon, sc.d., f.r.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.) 

 (June, 1923. . . . . . . .185 



22. Irregularities in the Rate of Solution of Oxygen by "Water. By 



the late H. G. Becker, a.r.c.sc.i., a.i.c. Demonstrator in 

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

 Pearson, a.r.c.sc.i.. Research Student. (June, 1923.) . 197 



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. R. G. Atkins, o.b.e., sc.d., f.i.c. (June, 1923.) 201 



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



the Production of Milk Fat. By E. J. Sheehy, f.r.c.sc.i., b.sc. 

 (hons.), M.R.I.A., Biochemical Laboratory, D. A. T. I. (June, 

 1923.) 211 



25. The Utilisation of Monomethylaniline in the Production of Tetryl. 



By Thomas Joseph Nolan, d.sc, p.i.c, and Henry W. 

 Clapham, Nobel Research Laboratories, Ardeer. (Communi- 

 cated by Prof. H. Ryan.) (July, 1923.) . . .219 



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



By Arthur E. Clark, b.a., Trinity College, Dublin. (Commu- 

 nicated by Mr. L. B. Smyth.) (July; 1923.) . . .225 



27. On a Problematic Structure in the Oldhaviia Rocks of Bray Head, 



Co. Wicldow. By Louis B. Smyth, m.a., sc.b. (Plate XII.) 

 (July, 1923.) . . . ... . .229 



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



Waters in relation to the Distribution of Snails. By W. R. G. 

 Atkins, o.b.e., sc.d., f.i.c.j and M. V. Lebour, d.sc. (July, 1923) 233 



29. Improved Methods of Evaporation in the Laboratory. By the 



late H. G. Becker, a.r.c.sc.i., a.i.c, Demonstrator in Chemistry, 

 College of Science, Dublin. (August, 1923.) . . .241 



30. A Rapid Gasometric Method of Estimating Dissolved Oxygen and 



Nitrogen in Water. By the late H. G. Becker, a.r.c.sc.i., a.i.c, 

 and W. E. Abbott, a.r.c.sc.i., a.i.c, b.sc (August, 1923.) . 249 



31. Ligneous Zonation and Die-Back in the Lime {Citrus medica, var. 



Acida) in the West Indies. By T. G. Mason, m.a., sc.d., 

 Botanist, West Indian Agricultural College. (Plates XIII- 

 XVI.) (August, 1923.) . . . . . .255 



