vi CONTENTS OF VOL. X. FOUKTH SERIES. 



Page 

 Mr. W. J. M. Rankine on the Hypothesis of Molecular Vor- 

 tices, or Centrifugal Theory of Elasticity, and its Connexion 



with the Theory of Heat 354 



Mr. A. Dick on the Preparation of Aluminium from Kryolite. . 364 

 Mr. F. M. Jennings on the Potash and Soda Felspars of the 



Dublin Mountains 365 



Proceedings of the Royal Society 366 



Contributmns towards the Knowledge of Fluorescent Bodies, 



by G. Werther 390 



On the Acetates of Manganese, Cadmium, and Nickel, by M. 



C. von Hauer 39 1 



Meteorological Observations for September 1855 391 



Table 392 



NUMBER LXVni.— DECEMBER. 



M. G. Wiedemann on the Transmission of Heat in Metals . . 393 

 Mr. W. J. M. Rankine on the Principle of Isorrhopic Axes in 



Statics 400 



Dr. Penny on the Composition and Phosphorescence of Plate- 

 sulphate of Potash - 401 



Prof. Weber on the Theory of Diamagnetism 407 



Mr. W. J. M. Rankine on the Hypothesis of Molecular Vor- 

 tices, or Centrifugal Theory of Elasticity, and its Connexion 



with the Theory of Heat {concluded) 411 



The Rev. J. A. Galbraithon the Felspars occurring in the Gra- 

 nites of the Dublin and Wicklow Mountains 420 



Prof. Tyndall on Reciprocal Molecular Induction 422 



Dr. Price and Mr. E. C. Nicholson on the supposed Influence 

 of the Hot-blast in augmenting the quantity of Phosphorus 



in Pig-iron 423 



Mr. R. P. Greg on the Lunar Origin of Aerolites 429 



Mr. H. J. Brooke on a New Ore of Silver 436 



Notices respecting New Books : — Hughes's Reading Lessons, 

 First Book; The Rev. G. Salmon's Treatise on Conic Sections. 437 



Proceedings of the Royal Society ., 442 



On the Heat produced by the Influence of the Magnet upon 



Bodies in Motion, by M. Leon Foucault 457 



Meteorological Observations for October 1855 458 



Table 459 



Index 460 



