CONTENTS OF VOL. XVIII. — FOURTH SERIES. V 



NUMBER CXIX.— SEPTEMBER. ; 



Page 

 Prof. Magnus's Hydraulic Researches. — Part II. (With Two 



Plates.) 161 



Mr. A. Gages on Vivianite 182 



M. F. Eisenlohr on the Relation between the direction of the 

 Vibration of Light and the Plane of Polarization, and on its 



determination by means of Diffraction 186 



Mr. A. Cayley on an Analytical Theorem connected with the 



Distribution of Electricity on Spherical Surfaces. — Part II. . 193 

 Mr. W. K. Sullivan on the nature of Lactic Fermentation, and 

 on an apparent conversion of Caseine into Albumen which 

 accompanies the production of Lactic Acid in Milk excluded 



from the Air 203 



Prof. Wohler on the Composition of the Cape Meteorite 213 



Mr. J. W. Mallet on Brewsterite 218 



Notices respecting New Books : — 



Mr. Todhunter's Examples of Analytical Geometry of 



Three Dimensions 221 



Mr. Todhunter's Plane Trigonometry 221 



Mr. Besant's Treatise on Hydrostatics and Hydrodynamics. 221 

 Proceedings of the Royal Society : — 



Dr. Frankland on Organo- metallic Bodies 222 



Proceedings of the Cambridge Philosophical Society : — 



Mr. Godfray on a Chart and Diagram for facilitating Great- 

 Circle Sailing 228 



The Public Orator on the Battle of the Trebbia 228 



The Astronomer Royal on the Theorem that every Alge- 

 braic Equation has a Root 230 



Mr. Humphry on the Limbs of Vertebrate Animals .... 230 



Dr. Donaldson on Plato's Cosmical System 231 



Prof. De Morgan on the general principles of which the 

 Composition or aggregation of Forces is a consequence. 231 

 Proceedings of the Geological Society : — 



Dr. Falconer on the Ossiferous Caves near Palermo .... 233 

 Mr. Prestwich on the Bone-cave at Brixham in Devonshire. 236 

 Mr. J. W. Flower on a Flint-implement recently disco- 

 vered in a bed of Gravel at Saint-Acheul, near Amiens, 236 

 Experiments to show the existence of a new Species of Resistance 



to the Transmission of Electricity, by M. J. M. Gaugain .. 237 

 On Alcoholic Fermentation, by L. Pasteur 239 



NUMBER CXX.—OCTOBER. 



M. Poinsot on the Percussion of Bodies 241 



Archdeacon Pratt on the Thickness of the Crust of the Earth . 259 

 Prof. G. Rose on the Isomorphism of Stannic Acid, Silicic Acid, 

 and Zirconic Acid (Zirconia) 262 



