449 



INDEX to VOL. XII. 



AlRY (Sir G. B.) on a systematic 

 interruption in the order of nume- 

 rical values of vulgar fractions, 175. 



Atomic weights, recalculation of the, 

 101. 



Attraction, on molecular, 258. 



Ayrton (W. E.) on the index of re- 

 fraction of ebonite, 196. 



Batteries, on secondary, 380. 



Beats of mistimed consonances, on the 

 history of the theory of the, 270, 

 434. 



Becquerel (H.) on a method for am- 

 plifying displacements of the plane 

 of polarization, 230,- on magnetic 

 rotatory polarization in gases, 309, 

 394. 



Binaural audition, on some pheno- 

 mena of, 351. 



Binocular perspective, on Wheat- 

 stone and Brewster's theory of, 436. 



Books, new. — Venn's Symbolic Logic, 

 61 ; Monck's Introduction to Logic, 

 64 ; Haughton's Lectures on Phy- 

 sical Geography, 65 ; Pallisser's 

 Plane Geometry, 67 ; Ganot's Na- 

 tural Philosophy, 68; Bauerman's 

 Textbook of Systematic Minera- 

 logy, 68 ; Yan den Broeck's Alte- 

 ration of Superficial Deposits, 378 ; 

 Haslam and Edwards's Conic Sec- 

 tions, 443 ; Dyer's Exercises in 

 Analytical Geometry, 444. 



Bosanquet (K. H. M.) on the labora- 

 tory at St. John's College, Oxford, 

 178 ; on the history of the theory 

 of the beats of mistimed conso- 

 nances, 270, 434. 

 Brewster's theory of binocular per- 

 spective, on, 436. 

 Brown (F. D.) on molecular attrac- 

 tion, 253. 



Bunsen's calorimeter, on a modifica- 

 tion of, 172. 



Calorimeter, on a modification of 

 Bunsen's, 172. 



Capillo-electric effects, on some, 

 824. 



Chase (P. E.) on another confirma- 

 tion of prediction, 448. 



Chemical affinities, on a new method 

 of measuring certain, 299. 



Clarke (F. W.) on the results ob- 

 tained in a recalculation of the 

 atomic weights, 101. 



Clausius (Prof. P.) on the theoretic 

 determination of vapour-pressure 

 and the volumes of vapour and 

 liquid, 381. 



Cobalt, on the rotational coefficient 

 in, 157 ; on the coercive forces of, 

 308. 



Cockle (Sir J.) on the inverse pro- 

 blem of criticoids, 189. 



Cold produced by the mutual reaction 

 of solid substances, on, 290. 



Colour-sensations, on the theory of 

 the three fundamental, 78. 



Colours, on the determination of the 

 angular distance of the, 228. 



Comet b, 1881, on the photographic 

 spectrum of, 155. 



Comets, on the light of, 306. 



Consonances, on the history of the 

 theory of the beats of mistimed, 

 270, 434. 



Contact-potential, on a theory of. 

 324. 



Cook (E. II.) on the existence of the 

 luminiferous aether, 156. 



Criticoids, on the inverse problem of, 

 189. 



Croullebois (M.) on an anomaly in 

 double circular refraction, 305 ; on 



