VI CONTENTS OF VOL. XXXIX. FOURTH SERIES. 



Page 

 Dr. W. M. Watts's Note on the Temperature and Heating- 

 powers of Flames 337 



Mr. J. Dewar's Note on the Atomic Volume of Solid Substances. 339 



Mr. J. Dewar's Note on Inverted Sugar 345 



The Rev. J. M. Heath on the Theory of the Variation of Tem- 

 perature in Gases in consequence of Changes in their Density 



and Pressure 347 



M. H. Kolbe on the Province of Mineral Chemistry 348 



Captain A. R. Clarke on the Course of Geodesic Lines on the 



Earth's Surface 352 



Mr. T. S. Aldis on Goodricke's Theory of Algol 363 



M. A. Wiillner on the Spectra of some Gases under High Pres- 

 sures 365 



Mr. J. A. Calantarients's Description of a New portable Mer- 

 curial Barometer 371 



Proceedings of the Royal Society : — 



Mr. G. Gore on Fluoride of Silver.— Part 1 374 



Mr. E. J. Stone on the Heating-powers of Arcturus and 



a Lyrse 376 



Mr. R. A. Proctor on certain Drifting Motions of the Stars. 381 

 Proceedings of the Geological Society : — 



Dr. A. Rattray on the Geology of Cape- York Peninsula, 



Australia 383 



Messrs. H. W. Bristow and W. Whitaker on the Forma- 

 tion of the Chesil Bank, Dorset 384 



Mr. W. Whitaker on a Raised Beach at Portland Bill, 



Dorset 384 



Messrs. E. Tawney and T. Davidson on the occurrence of 



Terebratula diphya in the Alps of the Canton de Vaud. . 385 

 Prof. Huxley and Mr. L. C. Miall on a new Labyrintho- 



dont from Bradford 385 



Prof. Huxley on the Maxilla of Megalosaurus 385 



Dr. G. H. F. Ulrich on the * Nuggetty Reef,' Mount Tar- 



rangower Gold-field 386 



Dr. C. Le Neve Foster on the Caratal Gold-field 386 



Mr. R. Tate on the Geology of Guyana in Venezuela . . 386 

 Mr. J. J. Murphy on the Nature and Cause of the Glacial 



Climate 387 



Sir Philip Grey Egerton on two new Species of Gyrodus . . 387 

 Mr. J. W. Hulke on a Saurian Humerus from the Kimme- 

 ridge Clay of the Dorset coast, and on some Fossil re- 

 mains of a Gavial-like Saurian from Kimmeridge Bay. . 388 

 Mr. W. T. Blanford on the Geology of a Portion of Abys- 

 sinia 389 



Prof. J. W. Dawson on the Graphite of the Laurentian of 



Canada 389 



Mr. D. Mackintosh on the Correlation, Nature, and Origin 

 of the Drifts of North-west Lancashire and part of Cum- 

 berland 389 



