521 ] 



INDEX to VOL. XXIX 



iTjTHER, on the non-existence of 

 density in the elemental, 467. 



Air, on a method of determining 

 moisture and carbonic acid in, 306 ; 

 on electrical vibrations in rarefied, 

 without electrodes, 375; on the 

 oscillations of periodically heated, 

 452. 



Atmosphere, on the vibrations of an, 

 173. 



Atmospheric electricity in the Tro- 

 pics, on, 520. 



Bams (C.) on the pressure- variations 

 of certain high-temperature boil- 

 ing-points, 141 ; on the change of 

 the order of absolute viscosity en- 

 countered on passing from fluid to 

 solid, 337. 



Bells, on, 1. 



Bidwell (S.) on the electrification of 

 a steam-jet, 158 ; on the magneti- 

 zation of iron in strong fields, 440. 



Bishop's ring, on the nature of, 171. 



Boiling-points, on the pressure- 

 variations of certain high-tempe- 

 rature, 141. 



Bonney (Prof. T. G.) on the crystalline 

 schists of the Lepontine Alps, 284. 



Books, new: — Fisher's Physics of 

 the Earth's Crust, 211; Transac- 

 tions of the Edinburgh Geological 

 Society, Vol. VI. Part 1, 372; 

 Ohrystal's Algebra, Part II., 449 ; 

 Irving's Chemical and Physical 

 Studies in the Metamorphism of 

 Rocks, 514. 



Brown (J.) on dropping-mercury 

 electrodes, 376. 



Calorimeter, on a new form of 



mixing, 247. 

 Candle, on the radiant energy of the 

 standard, 518. 



Carbonic acid in air, on a method of 



determining, 306. 

 Carnelley (Dr. T.) on an algebraic 

 expression of the periodic law of 

 the chemical elements, 97. 



Cams- Wilson (C. A.) on the be- 

 haviour of steel under mechanical 

 stress, 200 ; on the distribution of 

 flow in a strained elastic solid, 

 503. 



Chemical action and electrolytic con- 

 duction, on the problems of, 383, 

 480. 



reactions, on the inert space in, 



216. 



research, on a new method and 



department of, 401. 



Chronograph, on a new form of elec- 

 tric, 377. 



Clouds, on diffraction-colours with 

 special reference to iridescent, 167. 



Coldridge (W.) on the electrical and 

 chemical properties of stannic 

 chloride, 383, 480. 



Cole (G. A. J.) on the variolitic 

 rocks of Mont-Genevre, 286. 



Contact-forces, on the measurement 

 of electromotive, of metals in dif- 

 ferent gases by means of the ultra- 

 violet rays, 291. 



Coronas, on diffraction-colours with 

 reference to, 167. 



Corpi (F. M.) on the catastrophe of 

 Kantzorik, Armenia, 133. 



Current, on the time-integral of a 

 transient electro -magnetically in- 

 duced, 276. 



Currents, experiment to prove the 

 existence of the direct and inverse 

 extra, 216. 



Curves, on plotting, by the aid of 

 photography, 180. 



Daguenet (C.) : experiment to prove 

 the existence of the direct and 

 inverse extra-currents, 216. 



Diffraction-colours with reference to 

 coronas and iridescent clouds, 167. 



Diffusion, on evaporation and solu- 

 tion as processes of, 139. 

 Dissociation in gases, on the kinetic 



theory of, 18. 

 Dubois (II. E. J. G.) on Kerr's mag- 



