CONTENTS OF VOL. XXXIV. FOURTH SERIES. V 



Page 

 Mr. C. Tomlinson on the so-called " Inactive " Condition of 



Solids 229 



Proceedings of the Royal Society :— # 



Mr. A. Claudet on a Self-acting Focus-Equalizer 231 



Prof. Stokes on the Internal Distribution of Matter which 

 shall produce a given Potential at the Surface of a Gra- 

 vitating Mass • ■ ■ ■ • • • • • 235 



Mr. T. Graham on the Occlusion of Hydrogen Gas by Me- 

 teoric Iron ■"■■"V 239 



On a Photometer for Measuring the Transparence of the Air, 



by M. A. de la Rive " 241 



On the Laws which govern the general distribution of Heat over 



the Earth, by Pliny Earle Chase • • • • 244? 



On the spontaneous Change of a Liquid Cylinder into Isolated 

 Spheres, by Dr. Felix Plateau 246 



NUMBER CCXXX.— OCTOBER. 



Mr. A. B. Northcote on the Water of the River Severn at ^ 



Worcester 7 



Mr C W. Siemens on a Resistance-measurer ^/u 



Mr J. Douglas on the Source of Muscular Force ......... 273 



Dr.' E. Lommel on the Theory of the Evening Glow and analo- 



gous Phenomena • • • • • \ • • • • • • • • • • • ° 



Dr Rankine on the Approximate Drawing of Circular Arcs of ^ 



M^LorTnz on 'the Identity of 'the' Vibrations of Light with 



Electrical Currents • • 7 



Prof. Lielegg on the Spectrum of the Bessemer-flame 60 Z 



Proceedings^ the Royal Society :— ■ 



Mr. G. J. Stoney on the Physical Constitution of the bun 



and Stars ; • • • • • ■ • • • ■ * ' ' 



Prof.H.E. Roscoe on the Chemical Intensity of lotal Day- 

 light at Kew and Para in 1865-67 •• 313 



Dr. T. Andrews on the Identity of the Body in the At- 

 mosphere which decomposes Iodide of Potassium with 



Ozone 315 



Proceedings of the Geological Society :— -. • 



Mr.R.Etheridge on the Physical Structure of North Devon. 317 



Sir W. E. Logan on new Specimens of Eozoan 318 



Dr. Dawson on Fossils recently obtained from the Lauren- 



tian Rocks of Canada 3*8 



Mr W. Whitaker on Subaerial Denudation 3iy 



Captain T. A. B. Spratt on the Bone-caves in Malta . 320 

 Mr. R. Tate on the Lower Lias of the North-east of Ireland 321 

 Mr F - M. Burton on the Rhsetic Beds near Gainsborough. . 32 1 



Note on the Electrical Condition of the Terrestrial Globe, by A. ^ 

 de la Rive - » 



