iv 



Page 



On a possible Geological Cause of Changes in the Position of the Axis of 

 the Earth's Crust. By John Evans, F.R.S., Sec. G.S 46 



On the Action of Trichloride of Phosphorus on the Salts of the Aromatic 

 Monamines. By A. W. Hofmann, LL.D., F.R.S., &c 55 



Notice of a Zone of Spots on the Sun. By John Phillips, M.A., LL.D., 



E. R.S., Professor of Geology in the University of Oxford 63 



On Uniform Rotation. By C. W. Siemens, F.R.S 71 



On a Fluorescent Substance, resembling Quinine, in Animals ; and on the 

 Rate of Passage of Quinine into the Vascular and Non-vascular Textures 

 of the Body. By H. Bence Jones, M.D., F.R.S., and A. Dupre, Ph.D., 



F. C.S. 73 



Account of the Discovery of the Body of a Mammoth, in Arctic Siberia, in 

 a Letter from Dr. Carl Ernst von Baer, of St. Petersburgh, For. Mem. R.S. 93 



On the Bursa Fabricii. By John Davy, M.D., F.R.S., &c. 94 



Researches on Gun-cotton, — Memoir I. Manufacture and Composition of 

 Gun-cotton. By F. A. Abel, F.R S., V.P.C.S 102 



On the Dentition oi Rhinoceros leptorhinus (Owen). By W. Boyd Dawkins, 

 M.A. Oxon.,F.G.S 106 



Experimental Researches in Magnetism and Electricity. — Part I. By H. 

 Wilde, Esq \ 107 



Extract of a Letter from Charles Chambers, Esq., Acting Superintendent 

 of the Bombay Magnetic Observatory, to the President Ill 



On the Tides of the Arctic Seas. — Part III. On the Semidiurnal Tides of 

 Frederiksdal, near Cape Farewell, in Greenland. By the Rev. S. Haugh- 

 ton,F.R.S 114 



On the Mysteries of Numbers alluded to by Fermat. By the Rt. Hon. Sir 

 Frederick Pollock, Lord Chief Baron, F.R.S., &c 115 



Report on the Levelling from the Mediterranean to the Dead Sea. By Co- 

 lonel Sir Hemy James, R.E., F.R.S. 128 



Note on the Amyl-compounds derived from Petroleum. By C, Schor- 

 lemmer 131 



On a New Series of Hydrocarbons derived from Coal-tar. By C. Schor- 

 lemmer 132 



The Calculus of Chemical Operations ; being a Method for the Investiga- 

 tion, by means of Spnbols, of the Laws of the Distribution of Weight in 

 Chemical Change, Part I, — On the Construction of Chemical Symbols. 

 By Sir B, C. Brodie, Bart., F.R.S., Professor of Chemistry in the Univer- 

 sity of Oxford 136 



On the Motion of a Rigid Body moving freely about a Fixed Point. By J. 

 J. Sylvester, LL.D., F.R.S 139 



On Appold's Apparatus for regulating Temperature and keeping the Air 

 in a Building at any desired degree of Moisture. By J. P. Gassiot, 

 V.P.R.S 144 



On the Spectrum of a New Star in Corona Borealis. By William Huggins, 

 F.R.S., and W. A. Miller, M.D,, V.-P. and Treas. R.S 146 



