PROCEEDINGS OF 



THE EOTAL SOCIETY. 



vol. xvii. No. 108. 



CONTENTS. 



January 7, 1869. 



PAGE 



I. Description of the Cavern of Bruniquel, and its Organic Contents. — 



Part II. Equine Remains. By Professor Owen, F.R.S 201 



II. On the Mechanical Possibility of the Descent of Glaciers by their Weight 



only. By the Rev. Henry Moseley, M.A., Canon of Bristol, F.R.S., 

 Instit. Imp. Sc. Paris, Corresp 202 



III. Notes of a Comparison of the Granites of Cornwall and Devonshire with 



those of Leinster and Mourne. By the Rev. Samuel Hattghton, M.D., 

 D.C.L., F.R.S., Fellow of Trinity CoUege, Dublin 209 



January 14, 1869. 



I. On the Relation of Hydrogen to Palladium. By Thomas Geaham, 



F.R.S., Master of the Mint 212 



II. A Memoir on the Theory of Reciprocal Surfaces. By Professor Cayley, 



F.R.S 220 



III. A Memoir on Cube Surfaces. By Professor Cayley, F.R.S 221 



IV. On the Blue Colour of the Sky, the Polarization of Skylight, and on the 



Polarization of Light by Cloudy matter generally. By John Tyndall, 

 LL.D., F.R.S 223 



January 21, 1869. 



I. On the Thermal Resistance of Liquids. By Fbedeeick Gtttheie, F.C.S. 234 

 II. Results of a preliminary Comparison of certain Curves of the Xew and 

 Stonyhurst Declination Magnetographs. By the Rev. W. Sidgbeaves 

 and Baleotje Stewaet, LL.D., F.R.S 236 



III. On the reappearance of some periods of Declination Disturbance at Lisbon 



during two, three, or several days. By Senhor Capello, of the Lisbon 

 Observatory . 238 



IV. On the Action of Solid Nuclei in liberating Vapour from Boiling Liquids. 



By Chaeles Tomlinson, F.R.S 240 



For continuation of Contents see the 4tth page of Wrapper. 



