QUARTERLY REVIEWS Printed in Great Britain by Butler & Tanner Ltd. Frome and London QUARTERLY REVIEWS Committee of Publication Chairman SIR CYRIL HINSHELWOOD M.A. Sc.D. D.Sc. F.R.S. SIR WALLACE AKERS C.B.E. B.R. W. BAKER MA. D.Sc. F.R.S. R. P. RELL M.A. B.Sc. F.R.S. G. M. BENNETT C.B. M.A. Sc.D. F. BERGEL D.Phil.Nat,. Ph.D. H. BURTON Ph.D. D.Sc. F.R.I.C. A. H. COOK Ph.D. D.Sc. D.I.C. F. S. DAINTON M.A. Ph.D. C. W. DAVIES D.Sc. F.R.I.C. M. G. EVANS D.Sc. F.R.S. C. S. GIBSON O.B.E. M.A. Sc.D. D. LL. HAMMICE M.A. D.Sc. SIR IAN HEILBRON D.S.O. D.Sc. D. H. HEY Ph.D. D.Sc. F.R.I.C. A. KING C.B.E. D.Sc. A.R.C.S. F. E. KING M.A. D.Sc. Ph.D. G. A. R. KON M.A. D.Sc. F.R.S. R. P. LINSTEAD C.B.E. M.A. Ph.D. F.R.I.C. F.R.I.C. F.R.S. F.R.I.C. D.Sc. F.R.I.C. F.R.I.C. F.R.S. LL.D.F.R.S. D.Phil. D.Sc. F.R.S. H. W. MELVILLE Ph.D. D.Sc. R. G. W. NORRISH B.A. Sc.D. S. PEAT Ph.D. D.Sc. F.R.S. S. G. P. PLANT D.Phil. M.A. B.Sc. E. K. RIDEAL M.B.E. M.A. D.Sc. J. M. ROBERTSON M.A. D.Sc. F. L. ROSE O.B.E. B.Sc. Ph.D. H. N. RYDON D.Sc. Ph.D. D.Phil. F.R.S. F.R.S. Ph.D. F.R.S. Ph.D. F.R.S. F.R.I.C. F.R.I.C. A.R.C.S. F.R.I.C. B. C. SAUNDERS M.A. Ph.D. D.Sc. F.R.I.C. D. W. G. STYLE Ph.D. S. SUODEN D.Sc. F.R.S. F.R.I.C. A. R. TODD M.A. D.PhiI. D.Sc. W. WARDLAW C.B.E. D.Sc. T. S. WEEELER Ph.D. D.Sc. F.R.S. F.R.I.C. F.R.I.C. M.1.Chem.E. F. G. YOUNG D.Sc. Ph.D. F.R.S. F.R.I.C. Editor R. S. CAHN M.A. D.Phil.Nat. F.R.I.C. Assistant Editors A. D. MITCHELL D.Sc. F.R.I.C. L. C. CROSS Ph.D. A.R.C.S. F.R.I.C. Indexer MARGARET LE PLA B.Sc. LONDON THE CHEMICAL SOCIETY CONTENTS KINETICS OF OLEFIN OXIDATION.By J. L. BOLLAND . LABORATORY AND TECHNICAL PRODUCTION OF FLUORINE AND THE CHEMISTRY OF THE DITERPENOIDS. By D. H. R. BARTON TRANSITIONS IN SOLIDS AND LIQUIDS. By L. A. K. STAVELEY THE CONSTITUTION OF PORTLAND CEMENT. By F. M. LEA . THE MECHANISM OF ELECTRODE PROCESSES IN AQUEOUS SOLU- ITS COMPOUNDS. By H. R. LEECH . TIONS. By A. HICKLING . COMPOUNDS. SOME ASPECTS OF THE ORGANIC CHEMISTRY OF DERIVATIVES OF PHOSPHORUS OXYACIDS. By F. R. ATHERTON . RILEY . KINETICS OF THERMAL i'4DDITIOl.r O F HALOGENS TO OLEFINIC By P. B. D. DE LA MARE. CARBIDES NITRIDES AND CSRBONITRIDES OF IRON. By H. L. IONIC SOLVATION. By J. O'M. BOCKRIS . SOME ASPECTS OF PYRIMIDINE AND PURINE CHEMISTRY. By MECHANISMS OF HYDROGEN CATALYSIS. By D. D. ELEY . HYPERCONJUGATION. By V. A. CRAWFORD . NATURALLY OCCURRING PEPTIDES. THE TERRESTRIAL DISTRIBUTION OF THE ELEMENTS. MOLECULAR-SIEVE ACTION OF SOLIDS. By R. M. BARRER . RECENT STEREOCHEMISTRY OF THE GROUP VIII ELEMENTS. THE CONDENSED PHOSPHATES. By B. TOPLEY . CARBOHYDRATE SULPHATES. By E. G. V. PERCIVAL . B. LYTHGOE . By R. L. M. SYNGE By DAVID T. GIBSON . By R. S. NYHOLM . PAQE 1 22 36 65 82 95 126 146 160 173 181 209 226 245 263 293 321 345 369