CONTENTS OF THE SIXTH VOLUME. 



Part I. 



yjLay. 



N°. I. Researches in Physical Geology: i^ William Hopkins, MA 1 



II. Invesligaiion of the Equation to Fresnel's Wave Surface: by Archibald 



Smith, Esq jj^ 



III. On the Resolution of Equations in Finite Differences : by the Rev R 



Murphy, M.A. F.R.S f y, 



IV. Geometrical Theorems, and Formulx, particularly applicable to some Geodetical 



Problems: by William Wallace, A.M. F.JR.S. Edin., F.R.A.S. Lond.... 107 



V. Mathematical Considerations on the Problem of the Rainbow, sheivin" it to 



belong to Physical Optics: by R. Potter, Esq ° i4i 



VI. On the Dispersion of Light, as explained by the Hypothesis of Finite Intervals: 



by P. Kelland, B.A J51J 



VII. Sketch of a Method of Introducitig Discontinuous Constants into the Arithme- 



tical Expressions for Infinite Series, in cases where they admit of Several 

 Values. In a Letter to the Rev. George Peacock, i^-c. <^-c : by Augustus 

 De Morgan, B.A ]g5 



VIII. Piscium Maderensium Species qucedam novcE, vel minus rite cognitae breviter 



descriptcE. Auctore R. T. Lowe, A.M. Iconibus illustravit M. Young 195 



Part II. 



IX. On Fluid Motion, so far as it is expressed by the Equation of Continuity: by 



the Rev. S. Earnshaw 203 



X. On the Motion of a System of Particles, considered with reference to the 



Phenomena of Sound and Heat: by Philip Kelland, Esq 23.5 



XI. On the Relative Quantities of Land and Water on the Surface of the Terra- 



queous Globe : by Professor Rigaud 280 



XII. On the Results of Observations made with a new Anemometer : by the Rev. W. 



Whewell 3QJ 



XIII. On the Explanation of a Difficulty in Analysis noticed by Sir William Hamilton: 



by Arthur Augustus Moore, Esq 31Y 



XIV. On the Transmission of Light in Crystallized Media: by Philip Kelland, Esq. 323 



XV. Supplement to the Memoir on the Transmission of Light in Crystallized Media : 



by Philip Kelland, Esq \ 353 



XVI. A Statistical Report of Addenbroolce's Hospital, for the Year IS36 ■ by 



Hknry J. H. Bond, M.D gdl 



