VI CONTENTS OF VOL. XXXIII. — FOURTH SERIES. 



NUMBER CCXXIV.— MAY. 



Page 

 Mr. F. C. Webb on one of Ohm's Laws relating to an Insu- 

 lated Circuit 321 



Dr. W. von Bezold on Binocular Vision 326 



Archdeacon Pratt : To find what changes may be made in the 

 arrangement of the mass of a Body, without altering its out- 

 ward form, so as not to affect the attraction of the whole upon 



an external point 332 



Dr. How's Contributions to the Mineralogy of Nova Scotia . . 336 

 Mr. C. W. Heaton on the Function of the Blood in Muscular 



Work 341 



Sir David Brewster's Additional Observations on the Polariza- 

 tion of the Atmosphere, made at St. Andrews in 1841, 1842, 



1843, 1844, and 1845 346 



Mr. A. Ransome on some of the Conditions of Molecular Action. 360 

 Prof. Tyndall on the Action of Sonorous Vibrations on Gaseous 



and Liquid Jets 375 



Proceedings of the Royal Society : — 



Mr. J. Park Harrison on the Relation of Insolation to At- 

 mospheric Humidity 391 



Proceedings of the Geological Society :^ — 



Mr. R. Tate on the Jurassic Fauna and Flora of South 



Africa 396 



The Rev. O. Fisher on the Relation of the Chillesford Beds 



to the Fluviomarine Crag 396 



On the British-Association Unit for Electrical Measurements, 



by W. H. Preece 397 



On the Velocity with which a disturbance, produced in a Ga- 

 seous Mass contained in a cylindrical tube, is propagated, by 



M. P. Le Roux 398 



Note on the Theory of Tidal Friction, by D. D. Heath, M.A. . 400 



NUMBER CCXXV.— JUNE. 



Mr. C. Tomlinson on some Phenomena connected with the Ad- 

 hesion of Liquids to Liquids (With a Plate.) 401 



Prof. Magnus on the Influence of the Adhesion of Vapour in 

 Experiments on the Absorption of Heat 413 



Prof. Tyndall's Note on the preceding Paper 425 



Mr. J. Croll on the Change in the Obliquity of the Ecliptic, its 

 Influence on the Climate of the Polar Regions and on the 

 Level of the Sea 426 



Archdeacon Pratt on the Problem on Attractions, in the Philo- 

 sophical Magazine for May 445 



Dr. Atkinson's Chemical Notices from Foreign Journals 446 



Sir David Brewster's Additional Observations on the Polarization 

 of the Atmosphere, made at St. Andrews in 1841, 1842, 

 1843, 1844, and 1845 455 



