CONTENTS Or VOL. L. — FIFTH SERIES. y 



Page 



Mr. John Stevenson on the Chemical and Geological History 



of the Atmosphere . 312 



Mr H. S. Allen on the Motion of a Sphere in a Viscous 



Fluid 323 



Prof. J. Trowbridge on the Spectra of Hydrogen and the 



Spectrum of Aqueous Vapour 338 



Prof. B. W. Wood on an Application of the Method of Striae 

 to the Illumination ot* Objects under the Microscope. 



(Plate III.) ' • 347 



Mr. B. P. Gwyther on the General Motion of Long Waves, 

 with an Examination of the Direct Eeflexion of the 



Solitary Wave 349 



Proceedings of the Geological Society : — 



Dr. Charles Callaway on Longmyndian Inliers at Old 



Eadnor and Huntley (Gloucestershire) 352 



Mr. F. W. Harmer on the Pliocene Deposits of the East 



of England 353 



Mr. C. V. Bellamy on the Salt Lake of Larnaca in the 

 Island of Cyprus 356 



NUMBEE CCCV.— OCTOBEE. 



Messrs. Edwin H. Barton and Louis Lownds on the Eeflexion 

 and Transmission by Condensers of Electric Waves along 



Wires '...., 357 



Mr. W. F. Sheppard on the Tabulation of certain Frequency 



Distributions 393 



Mr. John Ste^nson on the Chemical and Geological History 



of the Atmosphere 399 



Mr. E. J. A. Barnard on the Annual March of Temperature. 408 

 Mr. E. T. Glazebrook on the Measurement of some Standard 



Eesistances 410 



Mr. H. E. AVimperis on Experiments on the Elasticity of Wires 416 

 Mr. H. M. Tory on a Comparison of Platinum Thermometers 



of different degrees of Purity 421 



Dr. P. Chappuis on Gas-Therm ometry 433 



Proceedings of the Geological Society : — 



Mr. F. E. Cowper Seed on the Igneous Bocks of the 



Coast of County Waterford 443 



Messrs. J. B. Hill and H. Kvnaston on a New Type of 

 Bock from Kentallen and Elsewhere, and its Eelations 

 to other Igneous Bocks in Argyllshire 444 



