CONTENTS of N° 242.— Fourth Series. 



XXII. On the Polarization of Heat at 100° C, and on the Motion 

 accompanying Heat-conduction. By Professor Magnus page 161 



XXIII. On the General Solution of Algebraic Equations. By 

 Thomas P. Kirkman, M.A., F.R.S 169 



XXIV. On certain Objections to the Theory of the Equivalent of 

 Refraction. By Dr. Albrecht Schrauf, Custodian of the Imperial 

 Mineralogical Cabinet of Vienna 175 



XXV. On the Experiment of Mahomet's Coffin. By G. Johnstone 

 Stoney, M.A., F.R.S 188 



XXVI. A New Theory of Vision. By Samuel Rowley, M.A. . . 192 



XXVII. On Sources of Error in Determinations of the Absorption 

 of Heat by Liquids. By W. Fletcher Barrett, Lecturer on Phy- 

 sical Science at the International College, &c 206 



XXVIII. On a Simple Method of Exhibiting the Combination of 

 Rectangular Vibrations. By W. Fletcher Barrett, Lecturer on 

 Physical Science at the London International College, &c. . . , 217 



XXIX. Notices respecting New Books : — A Manual of Inorganic 

 Chemistry, arranged to facilitate the Experimental Demonstration of 

 the Facts and Principles of the Science. By Charles W. Eliot and 

 Frank H. Storer 220 



XXX. Proceedings of Learned Societies :— 



Royal Society : — Mr. C. Tomlinson on Supersaturated Saline 

 Solutions ; Mr. W. Parkes on the Tides of Bombay and Kur- 

 rachee 222-232 



Geological Society : — Mr. A. Tylor on the Quaternary Gra- 

 vels of England 232 



XXXI. Intelligence and Miscellaneous Articles : — 



On the Preparation of Carbon Tubes, Crucibles, &c, by G. Gore. 234 

 On Magneto- electrical Machines, by MM. Jamin and Roger . . 235 

 On the Expansion and Compression of Saturated Vapours, by 

 M. Cazin 238 



%* It is requested that all Communications for this Work may be addressed, 



?ost-paid, to the Care of Messrs. Taylor and Francis, Printing Office, Red 

 aon Court, Fleet Street, London. 



