[ 528 ] 



INDEX TO VOL. XXVII. 



ABNEY (Capt. W. de W.) on the 

 measurement of the luminosity 

 and intensity of light reflected 

 from coloured surfaces, 62. 



Achromatism of interferences, on 

 the, 519. 



Actinometer, on an electrochemical, 

 288. 



^ther, comparison of the electric 

 theory of light and the theory of 

 a quasi-labile, 238. 



Ames (J. S.) on the concave grating 

 in theory and practice, 369. 



Arrhenius (Sv.) on the theory of 

 isohydric solutions, 287. 



Baron (Bev. R.) on the geology of 

 Madagascar, 431. 



Barns (C.) on the viscous effect of 

 strains mechanically applied, 155. 



Bismuth, on a voltaic current ob- 

 tained with, in a magnetic field, 440. 



Blakesley (T. H.) on the systems of 

 scientific units of measurement, 

 178. 



Blytt (A.) on the probable cause of 

 the displacement of shore-lines, 

 405, 487. 



Bonney (Prof. T. G.) on two traverses 

 of the crystalline rocks of the Alps, 

 203. 



Books, new : — Mascart and Joubert's 

 Treatise on Electricity and Mag- 

 netism, Vol. II., 200 ; Journal and 

 Proceedings of the Eoval Society 

 of New South Wales, Vol. XXII. 

 Part I., 277; Basset's Treatise on 

 Hydrodynamics, A^ol. II., 525. 



Bottomley (J. T.) on the effects of 

 torsion and longitudinal stress on 

 the magnetization of nickel, 133. 



Bressa prize, 208. 



Bromine, on the upper limit of re- 

 fraction in, 50. 



Brown (H. T.) on the Permian rocks 

 of the Leicestershire coal-field, 74. 



(J. E.) on the theory of mer- 

 cury-dropping electrodes, 384. 



(W.) on steel magnets, 270. 



Buckman (S. S.) on the Cotteswold, 

 Midford, and Yeovil sands and the 

 division between Lias and Oolite, 

 360. 



Chassagny (M.) on electrolysis, 366. 



Chemical action between bodies in 

 the solid state, 444. 



Circle, on the coefficient of mutual in- 

 duction of a, and a coaxal helix, 56. 



Coloured surfaces, on the measure- 

 ment of the luminosity and inten- 

 sity of light reflected "from, 62. 



Colours, on the sensitiveness of the 

 eye for various, 21. 



Conduction, on irreciprocal, 282. 



Conductors, on the passage of elec- 

 tricity through bad, 526. 



Convection-currents, on the electro- 

 magnetic effects of, 445. 



CroU (Dr. J.) on the evidence of 

 former glacial periods, 281. 



Cross (C. R.) on the strength of the 

 induced current with a magneto- 

 telephone transmitter, 392. 



Crvstalline rocks of the Alps, on the, 

 203. 



Crystals, on the growth of, in igneous 

 rocks, 278. 



Curie (J. & P.) on an electrometer 

 with a quartz double plate, 207. 



Dale (Rev. T. P.) on the upper limit 

 of refraction in selenium and bro- 

 mine, 50. 



Dalton's law, on the accuracy of, 439. 



Davison (C.) on the periodic move- 

 ments of the ground, 189. 



Dawson (Sir J. W.) on the rocks of 

 the Atlantic coast of Canada, 334. 



