VI CONTENTS OF VOL. XLV. FOURTH SERIES. 



Page 

 Mr. A. S. Davis on the Vibrations which Heated Metals un- 

 dergo when in contact with cold Material, treated mathe- 

 matically 296 



Proceedings of the Royal Society : — 



The President on a supposed Alteration in the Amount of 

 Astronomical Aberration of Light produced by the 

 Passage of the Light through a considerable thickness 



of Refracting Medium 306 



Dr. W. Huggins on the Wide-slit Method of viewing the 



Solar Prominences 306 



Mr. P. H. M. Bosanquet on Just Intonation in Music; 

 with a description of a new Instrument for the easy 

 control of all Systems of Tuning other than the ordi- 

 nary equal Temperament of twelve divisions in the Octave. 307 

 Mr. P. Guthrie on a new Relation between Heat and 



Electricity 308 



M. A. 0. Des Cloizeaux on a new Locality of Ambly- 

 gonite, and on Montebrasite, a new Hydrated Alumi- 

 nium and Lithium Phosphate 309 



Proceedings of the Geological Society : — 



Mr. P. T. Gregory on the recent discoveries of Tin-ore in 



Queensland 311 



Mr. G. H. P. Ulrich on some of the recent Tin-ore Dis- 

 coveries in Kew England, ]S"ew South Wales 312 



Messrs. W. J. Sollas and A. J. Jukes-Browne on the in- 

 cluded Pock-fragments of the Cambridge Upper Green- 

 sand 313 



On the Electrical Pesistance of Metals, by M. Benoist .... 314 

 On the conditions requisite for the Maximum of Pesistance 



of Galvanometers, by M. Th. Du Moncel 317 



On Stratification in a Liquid in Oscillatory Motion, by J. Stefan. 320 



NUMBEB CCCL— MAT. 



Sir William Thomson on the Ultramundane Corpuscules of Le 

 Sage, also on the Motion of Bigid Solids in a Liquid circu- 

 lating irrotationally through perforations in them or in a 

 Pixed Solid 321 



M. H. C. Yogel on the Absorption of the Chemically Active 

 Pays in the Sun's Atmosphere 345 



Prof. A. M.Mayer on the Effects of Magnetization in changing 

 the Dimensions of Iron, Steel, and Bismuth bars, and in in- 

 creasing the Interior Capacity of Hollow Iron Cylinders. — 

 Part. 1 350 



Dr. H. Hudson on the Intensity of Light &c 359 



Mr. P. Moon on the Definition of Intensity in the Theories of 

 Light and Sound 361 



M. G. Quincke on Diffraction 365 



