THE 



SCIENTIFIC PROCEEDINGS 



OF THE ,.<'r«.._-iorii<ii'i -^^iiiCf. 





ROYAL DUBLIN SOCIETY. ^^ rOVl 71923 



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'-<:/on ai m 

 Vol. XVIL, I.S, Hos. 25-31. AUGUST, 1923? 



25.— THE UTILISATION OF MONOMBTHYL ANILINE IN THE 

 PRODUCTION OF TETEYL. By Thomas Joseph Nolan, D.Sc, 

 F.I.C. ; and Henry W. Clapham, Nobel Research Laboratories, 

 Ardeer. (Communicated by Prof. H. Ryan.) 



26.— EVIDENCE OF DISPLACEMENT OF CARBONIFEROUS 

 STRATA, COUNTY SLIGO. By Arthur E. Clark, B.A., Trinity 

 College, Dublin. (Communicated by Mr. L. B. Smyth.) 



27.— ON A PROBLEMATIC STRUCTURE IN THE OLDHAMIA 

 ROCKS OF BRAY HEAD, CO. WICKLOW. By Louis B. 

 Smyth, M.A., Sc.B. (Plate XII.) 



28.— THE HYDROGEN ION CONCENTRATION OF THE SOIL AND 

 OP NATURAL WATERS IN RELATION TO THE DIS- 

 TRIBUTION OF SNAILS. By W. R. G. Atkins, O.B.E., Sc.D., 

 F.I.C. ; and M. V. Lebour, D.Sc. 



29.— IMPROVED METHODS OF EVAPORATION IN THE LABORA- 

 TORY. By H. G. Becker, A.R.C.Sc.L, A.I.C, Demonstrator in 

 Chemistry, College of Science, Dublin. 



30.— A RAPID GASOMETRIC METHOD OF ESTIMATING DIS- 

 SOLVED OXYGEN AND NITROGEN IN WATER. By H. G. 

 BECiiEK, A.R.C.Sc.L, A.LC; and W. E. Abbott, A.R.C.Sc.L, 

 A.LC., B.Sc. 



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.) 



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DUBLIN : 



PUBLISHED BY THE EOYAL DUBLIN SOCIETY, 



LEINSTEK HOUSK, DUBLIN. 



WILLIAMS AND NORGATE, 

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



1923. 



Price Six Shillings arid Sixpence. 



