ANNUAL REPORTSON THEPROGRESS OF CHEMISTRYANNUAL REPORTSA. C. CHAPMAN, F.I. C.C. H. DESCH, D.Sc., P1i.D.H. J. H. FENTON, M.A., Sc.D., F.R.S.A. FINDLAY, M.A., D.Sc., Ph. D.A. D. HALL, M.A.ON THEW. D. HALLIBURTOS, M.D., F.R.S.J. T. HEwITr, M.A., D.Sc., Ph.D.A. HUTCHINSON, M.A., Ph.D.H. 0. JONES, M.A., D.Sc.H. MARSHALL, D.Sc., F.R.S.PROGRESS OF CHEMISTRYF O R 1 9 0 7 .ISSUED BY THE CHEMICAL SOCIETY.H. E. ARMSTRONQ, Ph.D., LL.D.,E. C. C. HALY.HORACE T. BROWN, LL.D., F.R. S.A. W. CROSSLEP, D.Sc. , Ph.D. , F.R.S.F. R,. S.WYNDHAM R. DUNSTSN, M.A., LL.D.,F.R.S.M. 0. FORSTER, D.Sc., Ph.D., F.R.S.R. MELDOLA, F.R.S.G. T. MORGAN, D.8c.Sir W. RAMSAY, K. C. B., LL.D., F.R.S.A. SCOTT, M.A., D.Sc., F.R.S.W. A. TILDEN, D.Sc., F.R.S.JOHN WADE, D.Sc.4lFbitaz: :J.C. CAIN, D.Sc., Ph.D.% 11 b - &;bit or :A. J. GREEWAWAP.8r;air;taut %itXr-@bb-itar :C. H. DESCH, D.Sc., Ph.D.V O l . IV.LONDON:GURNEY & JACKSON, 10, PATERNOSTER ROW, E.C.1908RICHARD CLAY AND SONS, LIMITED,BREAD STREET HILL, E.C., ANDBUNQAY, SUFFOLKPREFACE.IN order to render the Annual Reports as comprehensive aspossible, slight variations will be made in the list of sections fromtime to time, For example, the Reports for 1908, while embracingas heretofore sections on A gricultural, Analytical, Inorganic, Organic,Physiological, General and Physical Chemistry, will include a Reporbon Crystallography in the place of Mineralogy, and advances inStereochemistry will be embodied in the sections directly concernedinstead of being placed in a separate division.The Report on Radio-activity, postponed until 1909, will cover the interval since thepresent issue.J. C. CCONTENTS.PAGEGENERAL AND PHYSICAL CHEMISTRY.INORGANIC CHEMISTRY. By HUGH MARSHALL, D.Sc., F.R.S. . . 34ORGANIC CHEMISTRY-ALIPHATIC DIVISION. By H. J. H. FENTON,M.A., Sc.D., F.R.S. . . - . . . . . . . 74ORGANIC CHEMISTRY-HOMOCYCLIC DIVISION. By CECIL H.DESCH, D.Sc., Ph.D. . . . . . . . . . . 109HEWITT, M.A., D.Sc., Ph.D. . . . . . . . . 138STEREOCHEMISTRY. By H. 0. JONES, M.A., D.Sc. . . . . 177ANALYTICAL CHEMISTRY. By ALFRED CHASTON CHAPMAN, F.I.C. . 199PHYSIOLOGICAL CHEMISTRY. By W. D. HALLIBURTON, M.D., F.R.S. 226AGRICULTURAL CHEMISTRY AND VEGETABLE PHYSIOLOGY.By A.D. HALL, M.A. . . . . . . . . . 261MINERALOGICAL CHEMISTRY. By ARTHUR HUTCHIKSON, M. A., Ph.D. 279RADIOACTIVITY. By FREDERICK SODDY, M.A. . . . . . 311By ALEXANDER FINDLAY,M.A., D.Sc., Ph.D. . . . . . . . . . 1ORGANIC CHEMISTRY-HETEROCYCLIC DIVISION. By J. TTABLE OF ABBREVIATIONS EMPLOYED I N THEABBREVIATED TtTLE.Abstr. . . . . .Anaer. J. Sci. . . .AsLalyst . . . .Annalen . . . .Ann. Physik . . .Ann. China. anal. . .Ann. of Botany. . .Ann. 12ejiot-t. . . .An2eiye.r K. Akncl. Wias.1Vien. . . . .Apoth. Zeit. . . .Ber. , . . .Brit. ked. J. . . .Bz~ll. Coll. Ayr. T8kyd .Bull. Soc. chirn. . .BILL?. SOC. chinz. Belg. .BUZZ. Soc. frang. Xin. .Centr. Bnkt. Par. . .Centr. Min. . . .Chem. NGWS . ..Chem. Eev. ~ett-Hccrn-~nd.Chein. Trade J. . .Chmn. Zeit. . . .Chem. Zentr. . . .Compt. rend. . . .Gazzetta . . .Jahrb. Min. Bei2.-Bd. ,Jahrb. Rndioaktiv. Elek-J. Agric. Scsyci. . . ,J. Amer. Chem. Xoc. , .J. Chim. phys. . . .J. Landw. . . . .J.pr. Chem. . . .J. Xoc. Chem. Ind. , .J. SOC. 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