﻿VI CONTENTS OF VOL. XXXVII. FOURTH SERIES. 



Page 

 Prof. How's Contributions to the Mineralogy of Nova Scotia . . 264 



Dr. Paalzow on the Galvanic Resistance of Liquids 27 1 



Prof. J. Bayma on the Fundamental Principles of Molecular 



Physics '. 275 



M. O. E. Meyer's Further Remarks on the Explanation of 

 Stewart and Tait's Experiments on the Heating of a Disk 



rotating in vacuo 287 



Dr. W. Marcet on the Falsetto or Head-Sounds of the Human 



Voice 289 



M. H. Wild on the Absorption of Light by the Air 293 



Notices respecting New Books : — Mr. F. S. BarfF s Introduc- 

 tion to Scientific Chemistry 304 



Proceedings of the Royal Society : — 



The Rev. S. Haughton's Notes of a Comparison of the 

 Granites of Cornwall and Devonshire with those of 



Leinster and Mourne 306 



Proceedings of the Geological Society : — 



Sir R. I. Murchison on the Geological Structure of North- 

 western Siberia 309 



Prof. Sandberger on a Section of a Well at Kissingen .... 309 

 Mr. A. Tylor on the Formation of Deltas ; and on the Evi- 

 dence and Cause of great Changes in the Sea-Level 



during the Glacial Period 310 



On the Coloration of Peroxide of Nitrogen, by M. Salet .... 312 

 On the Magnetism of Chemical Compounds, by Professor Wiede- 

 mann 314 



On the Latent Heat of Volatilization of Sal-ammoniac, by M. 

 C. Marignac 318 



NUMBER CCL.— MAY. 



Mr. D. Forbes's Researches in British Mineralogy 321 



Prof. R. Ball's Lecture Experiments to illustrate the Laws of 



Motion 332 



Mr. J. C. Douglas on Shadow Optometers 340 



Mr. W. Baker on the Cause of a Pink Colour in White-Lead 



Corrosions 344 



M. L. Soret on the Colour of the Lake of Geneva 345 



Prof. J. Bayma on the Fundamental Principles of Molecular 



Physics . 348 



Prof. J. A. Wanklyn on some Reactions of Hydrated Oxide of 



Ethylene- sodium 358 



Canon Moseley on the Mechanical Impossibility of the De- 

 scent of Glaciers by their Weight only 363 



Canon Moseley on the Uniform Motion of an Imperfect Fluid. 370 



