473 



INDEX TO VOL. IV. 



j\lR, on the thermal conductivity 

 and diathermancy of, 401. 



AUport (S.) on ancient devitrified 

 pitchstones and perlites from the 

 Lower Silurian district of Shrop- 

 shire, 75. 



Audition, on binaural, 274. 



Ayrton (Prof. W. E.) on ice as an 

 electrolyte, 114. 



Baily (W.) on a new automatic mo- 

 tion for the spectroscope, 100. 



Belt (J.) on the steppes of Southern 

 Russia, 151. 



Bezold (M. von) on the fluorescence 

 of the living retina, 397. 



Blondlot (R.) on the diamag-netism 

 of condensed hydrogen, 159. 



Bonney (Rev. T. G. ) on the serpen- 

 tine and associated rocks of the 

 Lizard district, 74. 



Books new : — Goodeve and Shelley's . 

 Whitworth Measuring Machine, 

 223 ; Routh's Dynamics of a Sys- 

 tem of Rigid Bodies,305; William- 

 son's Integral Calculus, 307 ; Min- 

 chin's Statics, 386; Bosanquet's 

 Treatise on Musical Intervals and 

 Temperament, 387. 



Bornstein (R.) on the influence of 

 light on electrical tension in me- 

 tals, 330. 



Bosanquet (R. H. M.) on the theorv 



of sound, 25, 125, 216. 

 Brough (R. S.) on a case of light- 

 ning, 105 ; on the diameter of the 

 wire to be employed in winding an 

 electromagnet in order to produce 

 the maximum magnetic effect, 253 ; 

 on the best resistance of a tele- 

 graph receiving-instrument, 449. 

 Buff" (Prof. H.) on the thermal con- 

 ductivity and diathermancy of air 

 and hydrogen, 401. 

 Burbury (S. H.) on action at a dis- 

 tance in dielectrics, 62. 



Phil. Mag. S. 5. Vol 4. No. 27. 



Campbell (J. F.) on the glacial pe- 

 riod, 152. 



Cazin (A.) on the spectrum of the 

 electric spark, 153. 



Chase (Prof. P. E.) on the nebular 

 hypothesis, 291 ; on the gamut of 

 light, 396. 



Chemical classification, on, 81, 187, 

 257. 



compounds, on the magnetic 



behaviour of, 161, 276; on the 

 spectra of, 444. 



Chromatic aberration, on the effect 

 of, in distant vision, 239. 



Clarke (Col. A. R.) on a correction 

 to observed latitudes, 302 ; on the 

 potential of an ellipsoid at an ex- 

 ternal point, 458. 



Clausius (Prof. H.) on a general 

 theorem respecting electrical influ- 

 ence, 454. 



Crookes's force, on, 67. 



CrouUebois (M.) on the exact mea- 

 sure of the heat of solution of sul- 

 phuric acid in water, 471. 



Darwin (G. H.) on fallible measures 

 of variable quantities, and on the 

 treatment of meteorological obser- 

 vations, 1. 



Daubree (Prof A.) on zeolitic and 



siliceous incrustations, 234. 

 Davyum, on the new metal, 158, 395. 



Dawson (G. M.) on the superficial 

 geology of British Columbia, 237. 

 Diamagnetism of condensed hydro- 

 gen, on the, 159. 

 Dielectrics, on action at a distance in, 



62. 

 Dissociation, on some effects of, on 

 the physical properties of gases, 

 174. 

 Earnshaw (Rev. S.) on the finite in- 

 tegrals of certain partial differen- 

 tial equations, 213. 

 Electric current, on the apparent 



Dec. 1877. 2 I 



