IV CONTENTS OF VOL. I. FIFTH SERIES. 



Page 

 Prof. J. H. Cotterill on the Distribution of Energy in a mass 



of Liquid in a state of steady Motion 108 



Mr. A. M. Mayer on the History of Young's Discovery of his 



Theory of Colours Ill 



Prof. IT. How's Contributions to the Mineralogy of Nova Scotia. 128 

 Mr. O. Fisher on Mr. Mallet's Strictures on the Mathematical 

 Test applied to his Theory of Volcanic Energy by Mr. O. 



Fisher 138 



Mr. J. A. Fleming on the Polarization of Electrodes in Water 



free from Air 142 



Notices respecting New Books : — 



Mr. I. Todhunter's Elementary Treatise on Laplace's 

 Functions, Lame's Functions, and Bessel's Functions. 148 



Mr. P. Frost's Solid Geometry 151 



Proceedings of the Boyal Society : — 



Prof. W. G. Adams on the Change produced by Magnet- 

 ization in the Electrical Eesistance of Iron and Steel. 



— Preliminary Notice 15& 



Prof. W. G. Adams on the Action of Light on Selenium. 155 

 Proceedings of the Geological Society : — 



Mr. T. Belt on the Drift of Devon and Cornwall 159 



Mr. J. Gunn on the presence of the Forest-bed Series at 



Kessingland and Pakefield, in Suffolk 161 



Mr. J. C.Ward on the Granitic, Granitoid, and associated 



Metamorphic Bocks of the Lake-district 161 



Mr. W. H. Penning on the Physical Geology of East 



Anglia during the Glacial Period 164 



Mr. A. Taylor on Denuding Agencies and Geological 



Deposition under the Flow of Ice and Water 166 



Mr. B. A. Peacock on Historical and Personal Evidences 



of Subsidence beneath the Sea 168 



Mr. H. Hicks on the Physical Conditions under which 

 the Upper Silurian and succeeding Palaeozoic Eocks 

 were probably deposited over the Northern Hemisphere. 169 

 On the Eecomposition of the Component Colours of White 



Light, by Professor J. Loudon 170 



On the Transparence of Flames and of the Atmosphere, and 



on the Visibility of Scintillating Signal-lights, by E. Allard. 171 

 On some Properties of Gallium, by Lecoq de Boisbaudran . . 173 

 On the Spectrum of Gallium, by Lecoq de Boisbaudran .... 176 



NUMBEE III.— MAECH. 



Mr. G. J. Stoney on Crookes's Eadiometer 177 



Mr. W. Ferrel on a controverted Point in Laplace's Theory of 



the Tides , 182 



Dr. C. Fromme on the Magnetism of Steel Bars 188 



