vl CONTENTS OF VOL. XIV.—FOURTH SERIES. 
Page 
Prof. Callan on the Induction Apparatus.........5-+-++5--- 323 
Mr. J. Bridge on the Gyroscope ......--++ee seers eee es 340 
Dr. Woods on the Time required by Compounds for Decompo- 
BU GLOTIDS hidte, «SRL er ale Ne Michela rar salllata stole brs, Mine aarepamneMeratl 346 
Mr. W. S. Jevons on a Sun-gauge .... 60... eee eee eres 351 
Prof. Knoblauch on the Influence of Metals upon Radiant Heat. 356 
Sir W. R. Hamilton on the Calculation of the Numerical Values 
of a certain class of Multiple and Definite Integrals ...... 375 
Prof. Dove on the Electrical Light ........-..2.. 00-0000. 888 
Proceedings of the Ruyal Society :— 
Mr. T. Hopkins on the Action of Aqueous Vapour in Dis- 
turbing the Atmosphere ... 387 
Mr. T. S. Hunt on the Serpentines of ‘Canada and their 
associated Rocks: esis diie ct oie iss ielefeveliteiein een sls 388 
Prof. Newman on Deteradiaaniey better called Eliminants. 390 
The Rey. W. Cook on the Theory of the Gyroscope .. 395 
On Demidovite, a new species of Mineral from Nijne Taguil 
in the Ural, by N. Nordenskiold . 397 
On the Behaviour of the native Metallic Sulphurets “towards 
Muriatic Acid under the influence of Galvanism, by M. von 
Ferenc enc wa tasip cf eee tas Siiesnyd aera bbe ee aged tore ne 399 
NUMBER XCV.—DECEMBER. 
Prof. Faraday on the Experimental Relations of Gold (and other 
Metals) to Light.—The Bakerian Lecture .............. 401 
Dr. Gladstone on the Colour of Salts in Solution, each consti- 
tuent of which is coloured. (With a Plate.) ............ 415 
Dr. Gladstone on the Effect of Heat on the Colour of Salts in 
Solawon. (With a Plate. ire oie tae ke [siege ae nc etapa ee 423 
Mr. A. Cayley’s Demonstration of Sir W. RK. Hamilton’s 
Theorem of the Isochronism of the Circular Hodograph.... 427 
M. J. Plateau’s Experimental and Theoretical Researches on 
the figures of Equilibrium of a Liquid Mass withdrawn from 
the Action of Gravity.—Third Series (concluded) ........ 431 
Prof. Potter on the Principle of Nicol’s Rhomb, and on some 
improved forms of Rhombs for procuring Beams of plane- 
polarized Light . . la fo oars ee 
Mr. A. B. Northcote on the Brine- -springs of Cheshire ...... 457 
Proceedings of the Royal Society :— 
Mr. W. H. Barlow on an Element of Strength in Beams 
subjected. to Transverse Strain... . ....:.....- se sie See 
Colonel Yorke’s Researches on Silica ................ 476 
Prof. Pliicker on the Magnetic Induction of Crystals. -. 477 
On a new Stereoscopic Phenomenon, by M. A. Cima ...... 480 
Note on M. Ruhmkorff’s Induction Coil, by E. S. Ritchie .. 480 
