CONTENTS OF VOL. XXXIV, 



(FOURTH SERIES.) 



NUMBER CCXXVII.-JULY 1867. page 



Prof R Bunsen on a Method of determining the Specific Gra- 



vity of Vapours and Gases. (With a Plate.) l5 



Sir William Thomson on Vortex Atoms • . • • • • • ; • • • • 



Archdeacon Pratt on Professor Stokes's Proof of Clanaut s ^ 



D^A^onVchemic^ 26 



Mr H. A. Newton on certain recent Contributions to Astro- ^ 



Mefrr/Vanklynand R RF'. DaveV on sir Benjamin ^ 

 Rrodie's " Ideal Chemistry .*'■.*" "j 



Mr J. J. Waterston on the Change that would be ^permduced 

 upon an Elliptic Orbit if the intensity of the force of Grav ty 

 were influenced by the centripetal velocity of the Orbital J3ody 55 



Mr W. Ellis's Inquiry as to whether the tendency to Dispersion 

 of Cloud under a Full Moon in any way depends on Lunar ^ 

 Influence 



Proceedings of the Royal Society :— _ 



Dr. W. J. Macquorn Rankine on a Property of Curves . . o5 



Proceedings of the Geological Society :— ,, « " * n t 



The Earl of Selkirk on ancient Sea-marks on the Coast ot ^ 



Sweden .*''.'* T " * \'i V" L fi7 



The Duke of Argyll on a Posttertiary Lignite in Argyllshire, b / 

 Mr.W. S. Shea on recent discoveries of Gold in JNew ^ 



Mr. WAVheelwright on the Discovery of Coal in the Andes 68 

 The Rev. P. B. Brodie on the Presence of Purbeck Beds at ^ 



Brill, Buckinghamshire • ■ ; ; ■ ' 



Mr H W. Bristow on the Lower Lias of Glamorganshire, by 

 Mr' C Moore on Abnormal Conditions of Secondary 

 Deposits when connected with the Somersetshire and 



South Wales Coal-basins • • • • - • • • • • ■ ■ ™ 



The Rev. P.B. Brodie on the Drift in a part of Warwickshire. 70 

 Mr. W. B. Dawkins on the Dentition of Rhinoceros lep- 



torhinus (Owen) • • • • • • -. • • ■ • • • • ' * „ , 



Mr J W. Judd on the Strata of the Lincolnshire Wolds. . 7 1 

 Researches on the Absorbing-Action which certain Volatile Li- 

 quids and their Vapours exert on the Heat from a Lamp with 

 a Glass Chimney, by M. P. Desains 



