[ 549 ] 



INDEX to VOL. XXIII 



ABBOTT (Rev. T. K.) on the order 



of lever to which the oar belongs, 

 58. 



Abercromby (Hon. R.) on the sun- 

 rise-shadows of Adam's Peak in 

 Ceylon, 29. 



Acetic acid, on the specific heat of 

 the vapour of, 223. 



Affinity, on the doctrine of, 504. 



Air, on the passage of the electric 

 current through, 384. 



Aluminium, on the galvanic polari- 

 zation of, 304. 



Amaury (H.), apparatus for the con- 

 densation of smoke by statical elec- 

 tricity, 471. 



Antimony, on the variations in the 

 electrical resistance of, in a mag- 

 netic field, 540. 



Arc-lamp for use with the Duboscq 

 lantern, on an, 333. 



Armstrong (Prof. H. E.) on the con- 

 stitution of carbon compounds, 73. 



Atmospheric phenomena, on some 

 remarkable, 29. 



Avogadro's law, on the theoretical 

 proof of, 305, 433. 



Battery, on a simple form of water-, 

 303. 



Bell (L.) on the absolute wave-length 

 of light, 265. 



Bidwell (S.) on the electrical resist- 

 ance of vertically-suspended wires, 

 499. 



Boltzmann (Prof. L.) on the theore- 

 tical proof of Avogadro's Law, 305. 



Books, new : — Reade's Origin of 

 Mountain-Ranges, 213 ; Descrip- 

 tive Catalogue of a Collection of 

 the Economic Minerals of Canada, 

 216; Journal and Proceedings of 

 the Royal Society of New South 

 Wales for 1885, 216 ; Capt. Noble's 

 Hours with a Three-Inch Tele- 

 scope, 218 ; Chrystal's Algebra, 



219 j Peirce's Elements of the 

 Theory of the Newtonian Potential 

 Function, 220 ; Annual Companion 

 to the 'Observatory,' 299; Carr's 

 Synopsis of Elementary Results in 

 Pure Mathematics, 300 ; Oliver, 

 Wait, and Jones's Treatise on Al- 

 gebra, 465. 



Borgmann (J.) on the passage of the 

 electric current through air, 384; 

 on the heating of the glass of con- 

 densers by intermittent electrifi- 

 cation, 472. 



Bosanquet (R. H. M.) on silk v. wire 

 in galvanometers, 149 ; on the law 

 of the electromagnet and the law 

 of the dynamo, 338 ; on the deter- 

 mination of coefficients of mutual 

 induction, 412. 



Bottomley (J. T.) on a nearly perfect 

 simple pendulum, 72. 



Boys (C. V.) on the production, pro- 

 perties, and uses of the finest 

 threads, 489. 



Brown (W.) on the effects of per- 

 cussion on the magnetic moments 

 of steel magnets, 293, 420. 



Carbon compounds, on the constitu- 

 tion of, 73, 109. 



Cauchy's theory of reflection and re- 

 fraction of light, on, 151. 



Chemical reactions, on the inert space 

 in, 468. 



Cobalt, on the variations in the elec- 

 trical resistance of, in a magnetic 

 field, 540. 



Coleman (J. J.) on liquid diffusion, 1. 



Condensers, on the heating of the 

 glass of, b) r intermittent electrifi- 

 cation, 472. 



Conductivity, on electric, 339. 



Copper, on the atomic weight of, 138. 



Dessau (B.) on metallic layers which 

 result from the volatilization of a 

 kathode, 384. 



