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Contents of PROCEEDINGS, No. A 527. March, 1907. 



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Page 



ADDRESS OF THE PRESIDENT, LORD RAYLEIGH, O.M., D.C.L., AT 



THE ANNIVERSARY MEETING ON NOVEMBER 30, 1906 1 



A COMPARISON OF VALUES OF THE MAGNETIC ELEMENTS, 



DEDUCED FROM THE BRITISH MAGNETIC SURVEY OF 1891, WITH RECENT OBSERVA- 

 TION. By William Ellis, F.R.S 13 



ON THE INTENSITY OF LIGHT REFLECTED FROM TRANSPARENT 



SUBSTANCES. By Richard C. Maclaurin, M.A., LL.D., late Fellow of St. John's College, Cambridge ; .. 

 Professor of Mathematics, Wellington, New Zealand. . .. .. .. .. .. .. .... .. 18 



THE ELECTRIC OR MAGNETIC POLARISATION OF A THIN CYLINDER 



OF FINITE LENGTH BY A UNIFORM FIELD OF FORCE. By T. H. Havelock, M.A., D.Sc, 

 Fellow of St. John's College, Cambridge, Lecturer in Applied Mathematics in Armstrong College, Newcastle- 

 on-Tyne . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 



THE VELOCITY OF THE NEGATIVE IONS IN FLAMES. By E. Gold, B.A., 



Fellow of St. John's College, Cambridge ; Wheatstone Laboratory, King's College, London .. .. .. 43 



ON A NEW IRON CARBONYL, AND ON THE ACTION OF LIGHT AND 



OF HEAT ON THE IRON CARBONYLS. By Sir James Dewar, M.A., Sc.D., LL.D., F.R.S., 



Jacksonian Professor in the University of Cambridge, and Humphrey Owen Jones, M. A., D.Sc, Fellow of 

 Clare College, and Jacksonian Demonstrator in the University of Cambridge .. .. .... .. .. 66 



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