CONTENTS OF VOL. XXXII. FOURTH SERIES. V 



Page 

 Proceedings of the Royal Society : — 



Sir B. C. Brodie on the Calculus of Chemical Operations. 227 

 Proceedings of the Geological Society : — 



Mr. S. V. Wood on the Red Crag 230 



Mr. H. W. Bristow on supposed Remains of the Crag near 



Folkestone 231 



The Rev. O. Fisher on the Warp of Mr. Trimmer ...... 231 



Mr. J. W. Salter on Faults in the Drift-gravel at Hitchin. 232 

 Mr. J. W. Flower on Flint Implements found near Thetford. 232 

 Mr. J. S. Wilson on the Antiquity of Man in Ecuador. . . . 232 



Mr. R. J. L. Guppy on the Tertiary Formations of theWest 



Indies 232 



Lieut. -Colonel Neale on Gold-deposits in Ecuador ...... 233 



Mr. A. L. Adams on Bones of Fossil Chelonians from 



Malta, and on the Remains of Halitherium 233 



Dr. J. Young on the Affinities ofChondrosteus, Ag., and 



on new Carboniferous Genera ofCrossopterygian Ganoids. 234 

 Dr. Dawson on supposed Burrows of Worms in the Lau- 



rentian Rocks of Canada 234 



Observation on the Passage of the Spark of an Induction-coil 



through Flame, by A. Kundt 234 



On the Deportment of Solutions of Glauber's Salt on Reduction 



of Temperature, by Dr. F. Lindig of Schwerin 235 



On the Figure of the Earth, by Captain A. R. Clarke 236 



On the Rotatory Action which Quartz exercises on the Plane of 

 Polarization of the least-refrangible Rays of the Spectrum, by 



M. P. Desains 237 



On the Use of Nitroglycerine in the Quarries of Vosgesian Sand- 

 stone near Saverne, by M. E. Kopp 238 



NUMBER CCXVL— OCTOBER. 



M. H. Wild on the Absorption of Radiant Heat by Dry and by 



Moist Air " 241 



Mr. R. Gill on an Air-pump without Clearance. (With a Plate.) 256 



The Rev. S. Haughton's Notes on Mineralogy .260 



Prof.W. Beetz on the Development of Hydrogen from the Anode. 269 

 Prof. Challis on a Problem in the Calculus of Variations, in 



reply to Mr. Todhunter 278 



Prof. W. A. Norton on Molecular Physics 283 



Prof. C. Matteucci on the Origin of Muscular Power 289 



Prof. Tyndall's Sixth Memoir on Radiation and Absorption. — 

 Influence of Colour and Mechanical Condition on Radiant 



Heat 292 



Notices respecting New Books : — Prof. A. C. Ramsay's Me- 

 moirs of the Geological Survey of Great Britain. Vol. III. 

 The Geology of North Wales ; with an Appendix on the Fos- 

 sils, by J. W. Salter : — Sir W. R. Hamilton's Elements of 

 Quaternions 306, 308 



