CONTENTS OF VOL. XLV. FOURTH SERIES. V 



Page 

 Captain Noble on the Pressure required to give Rotation to 



Rifled Projectiles. (With a Plate.) 204 



Mr. R. H. M. Bosauquet ou the Measure of Intensity in the 



Theories of Light and Sound 215 



Proceedings of the Royal Society : — 



Mr. J. Stuart on the Attraction of a Galvanic Coil on a 



small Magnetic Mass 218 



Messrs. J". N. Lockyer and G. M. Seabroke on a new 



Method of viewing the Chromosphere 222 



Mr. P. H. Wenhani on a new Formula for a Microscope 



Object-glass 224 



Proceedings of the Geological Society : — 



Prof. P. M. Duncan on Trochocyathus anglicus, a new 



species of Madreporaria from the Red Crag 231 



Col. A. L. Pox on the Discovery of Palaeolithic Imple- 

 ments in association with Elejphas primigenius in the 



High-terrace Gravels at Acton and Ealing 232 



Mr. G. Busk on the Animal Remains found by Col. L. 

 Pox in the High- and Low-level Gravels at Acton and 



Turnham Green 233 



Mr. R. H. Tiddeman on the Evidence for the Ice-sheet in 

 North Lancashire and adjoining parts of Yorkshire and 



Westmoreland 233 



Prof. A. Gaudry on the Mammalia of the Drift of Paris 



and its Outskirts 235 



On the Action of a Conductor arranged symmetrically round 



an Electroscope, by Ch.-V. Zenger 235 



On the Heat of Transformation, by M. J. Moutier 236 



Royal Astronomical Society 239 



On the Determination of the Boiling-point of Liquefied Sul- 

 phurous Acid, by M. Is. Pierre 240 



NUMBER CCC— APRIL. 



The Marquis of Salisbury on Spectral Lines of Low Tempe- 

 rature 241 



Mr. 0. Heaviside on an advantageous Method of using the 

 Differential Galvanometer for measuring small Resistances. 245 



Prof. Everett on the Optics of Mirage 248 



Prof. A. M. Mayer on a simple Device for projecting on a Screen 



the Deflections of the Needles of a Galvanometer 260 



Mr. L. Schwendler on Differential Galvanometers 263 



Mr. J. C. Glashan on Eractional Distillation 273 



Mr. C. Tomlinson on the Action of Solid Bodies on Gaseous 



Supersaturated Solutions 276 



Mr. A. E. Sundell on Galvanic Induction 283 



