CONTENTS OF VOL. XXXIX. FOURTH SERIES. VU 



Page 

 Mr.W.Whitaker on the Connexion of the Geological Struc- 

 ture and Physical Features of the South-east of England 



with the Consumption Death-rate 390 



The Rev. C. G. Williamson on the Volcanic Phenomena 



of Hawaii 390 



Dr. H. A. Nicholson on certain of the Intrusive Igneous 



Rocks of the Lake-district 391 



Mr. S. H. Scudder on the Fossil Myriopods of the Coal- 

 formation of Nova Scotia and England 391 



Mr. A. Rogers on the Geology of the Country surrounding 



the Gulf of Cambay 391 



Mr. J. W. Mason on a new Acrodont Saurian from the 



Lower Chalk 391 



Mr. W. A. Sanford on Rodentia of the Somerset Caves . . 392 

 On a new kind of Electrical Dust-figures, by Professor von 



Bezold 392 



Action of Sodium on Acetic Ether 394 



On the Periods of certain Meteoric Rings, by Daniel Kirkwood. 394 

 On the Diathermancy of a Series of Substances for Obscure 



Heat, by Dr. Schultz-Sellack 396 



On the Influence of Sounding-vibrations on the Magnetism of 

 Iron, by Dr. E. Warburg 398 



NUMBER CCLXIIL— JUNE. 



Mr. A. S. Davis on a Theory of Nebulas and Comets 401 



M. J. Thomsen's Thermo- chemical Researches 410 



The Rev. J. M. Heath on Thermodynamics . . 421 



Mr. J. L. Tupper on an Optical Illusion 423 



The Hon. J. W. Strutt on an Electromagnetic Experiment . . 428 

 The Rev. Prof. Challis's Supplement to a Mathematical Theory 



of Oceanic Tides . 435 



M. F. L. Ekman on the Connexion between the Electrical Insu- 

 lating-power and Chemical Composition of various kinds of 



Glass 437 



The late Prof. G. Magnus on the Change in the Radiation of 



Heat by Roughness of the Surface 445 



Proceedings of the Royal Society : — 



Mr. H. C. Sorby on some remarkable Spectra of Com- 

 pounds of Zirconia and the Oxides of Uranium ...... 450 



_ Dr. W. J. M. Rankine on the Mathematical Theory of 

 Stream-lines, especially with those four Foci and up- 

 wards 460 



Proceedings of the Geological Society : — 



Mr. C. Moore on Australian Mesozoic Geology and Pa- 

 laeontology 462 



Mr. C. Moore on a Plant- and Insect-bed on the Rocky- 

 River, New South Wales 463 



