[ 520 ] 



INDEX to VOL. XXXI 



AlLOTROPIC silver, on, 238, 320, 

 497. 



Amagat gauge, on the, 400. 



Amalgams, on the thermal expansion 

 of some, in the liquid state, 292. 



Anderson (Prof. A.) on coefficients 

 of induction, 329 ; on the foco- 

 metry of diverging lens-combina- 

 tions, 511. 



Archbold (W. K.) on the alternating 

 electric arc between a ball and 

 point, 123. 



Arrhenius (Dr. S.) on the conduction 

 of electricity by the vapours of 

 heated salts, 290 ; on the electric 

 conductivity of hot gases, 415. 



Ayrton (Prof. W. E.) on the proof 

 of the generality of certain formulae 

 in dynamometry, 354. 



Bagshot beds of the London Basin, 

 on the stratigraphy of the, 67. 



Barus (C.) on the chemical equi- 

 librium of solids, 9 ; on the Bour- 

 don, the Tait, and the Amagat 

 high-pressure gauges, 400. 



Batteries, on secondary, 42. 



Bidwell (S.) on the efiect of heat on 

 the magnetic susceptibility of 

 nickel, 136 ; on some experiments 

 with selenium cells, 250. 



Blakesley (T. H.) on the solution of 

 a geometrical problem in mag- 

 netism, 281 ; further contributions 

 to dynamometry, 346. 



Blattner (E.) on the optical useful 

 effect of incandescent lamps, 147. 



Bonney (Prof. T. G.) on the north- 

 west region of Charnwood Forest, 

 143 ; on a contact-structure in the 

 syenite of Bradgate Park, 144. 



Books, new : — Basset's Elementary 

 Treatise on Hydrodynamics and 

 Sound, 138; Eustace's Notes on 

 Trigonometry and Logarithms, 

 140 ; The Scientific Papers of 

 James Clerk Maxwell, 141 ; Whi- 

 ting's Short Course of Experi- 

 ments in Physical Measurements, 

 Part II., 363; Cotterill's The 

 Steam-Engine considered as a 



Thermodynamic Machine, 364 ; 

 Clark's Dictionary of Metric and 

 other useful Measures, 436; Watts's 

 Index of Spectra, 436 ; Langdon- 

 Davies's The Phonopore and the 

 Simplex Phonopore Telegraph, 



437 ; Czermak's Reduction Tables 

 for Readings by the Gauss-Pog- 

 gendorff Mirror Method, 438; Bur- 

 ton's Introduction to Dynamics, 



438 ; Macdonald's Higher Geo- 

 metry, 513 ; Nixon's Supple- 

 ment to "Euclid revised," 513; 

 Taylor's Pitt Press Euclid, 514; 

 Blaikie and Thomson's Geometrical 

 Deductions, 514 ; De Fodor's Die 

 elektrischen Verbrauchsmesser, 

 514. 



Bos (D.) on the changes of volumes 

 of dielectrics, 146. 



Bourdon gauge, on the, 400. 



Boys (Prof. C. V.) on the measure- 

 ment of electromagnetic radiation, 

 44. 



Briscoe (A. E.) on the measurement 

 of electromagnetic radiation, 44. 



Brown (J.) on the role of the cation 

 in voltaic combinations, 449. 



Caldwell (F. C.) on the ball-and- 

 point phenomena, 131. 



Callaway (Dr. C.) on the uncon- 

 formities between the rock-sys- 

 tems underlying the Cambrian 

 quartzite in Shropshire, 145. 



Capillary spaces, on the condensation 

 of aqueous vapour in, 74. 



Cation in voltaic combinations, on the 

 role of the, 449. 



Catteneo (C.) on the thermal ex- 

 pansion of some amalgams in the 

 liquid state, 292. 



Cobalt glass, on the change in the 

 absorption-snectrum of, produced 

 by heat, 317. 



Condensers, on alternate current-, 102. 



Conductors, on the heating of, by 

 electric currents, 259. 



Conroy (Sir J.) on the change in the 

 absorption - spectrum of cobalt 

 glass by heat, 317. 



