546 



INDEX. 



Dawson (Sir J. W.) on Canadian 

 geology, 227. 



Determinants, on Schweins' disco- 

 veries in the theory of, 416. 



Dewar (Prof. J.) on the spectral 

 lines of the metals developed by 

 exploding gases, 161 ; on the lique- 

 faction of oxygen, and the critical 

 volumes of fluids, 210. 



Diethylamine, on the refractive index 

 of, 499. 



Diffraction, on phenomena of, in 

 moist air, 160. 



Dissociation, on, 233. 



Edge worth (F. G.) on a priori pro- 

 babilities, 204. 



Electric discharge in gases, on the, 

 35, 85. 



Electrical capacity of a condenser, 

 on a method of measuring the, 98. 



conductivity of water distilled 



in vacuo, on the, 542. 



resistances of metallic wires, on 



the alterations in the, produced by 

 coiling and uncoiling, 433. 



Electromagnetic rotation of the plane 

 of polarization of light by iron, 

 cobalt, and nickel, on the, 308. 



Electrometric measurements, on nor- 

 mal elements for, 173. 



Electrophonic machines, on the ma- 

 nagement of, 97. 



Elements, on the laws which govern 

 the melting- and boiling-points 

 and heats of formation of the ha- 

 logen compounds of the, 11 ; on the 

 colour of chemical compounds as a 

 function of the atomic weights of 

 their constituents, 130 ; on the oc- 

 currence of the, in nature, 194 ; on 

 the numerics of the, 393. 



Ethylamine, on the refractive index 

 of, 499. 



Eunson (H. J.) on the Palaeozoic 

 rocks beneath Northampton, 380. 



Fluids, on the critical volumes of, 

 210 ; on the surface forces in, 334. 



Force, on the supposed repulsion 

 between magnetic lines of, 494. 



Fromme (C.) on the changes produced 

 in the molecular condition of iron 

 by heating and cooling, 473. 



Gas-engine indicator-diagram, on the, 

 59. 



Gases, on the electric discharge in, 

 35, 85 ; on the chemical combi- 



nation of, 233; on a method of 

 calculating the ratio of the two 

 specific heats of, 372, 472. 



and vapours, on the coefficient 



of friction of, 544. 



Geological Society, proceedings of 

 the, 155, 225, 376. 



Glaisher (J. W. L.) on applications 

 of Mobius's theorem on the rever- 

 sion of certain series, 518. 



Glass, on the electrolysis of solid, 159. 



Glazebrook (R. T.) on a method of 

 measuring the electrical capacity 

 of a condenser, and on the deter- 

 mination by electrical observations 

 of the period of a tuning-fork, 98. 



Godwin-Austen (Lt.-Col. H. H.) on 

 Tertiary formations at the south 

 base of the Alps, 383. 



Goolden (W. T.) on a speed-indicator 

 for ships' propellors, 57. 



Groshans (J. A.) on the specific gra- 

 vity of certain substances in the 

 solid state and in aqueous solution, 

 405. 



Guthrie (F.) on salt-solutions and 

 attached water, 22, 105 ; on some 

 thermal and volume changes at- 

 tending mixture, 495. 



Hallock (W.) on the distance of the 

 poles of magnets, 390. 



Hamilton's quadratic equation, on, 

 454. 



Harmonic motion in stellar systems, 

 on, 200. 



Heat, on molecular latent, 54 ; on the 

 conductivity of tourmaline for, 

 427 ; investigations on radiant, 468. 



Henrichsen (S.) on the magnetism of 

 organic bodies, 78. 



Hicks (Dr. H.) on the Pre-Cambrian 

 rocks of Pembrokeshire, 376. 



Hill (Rev. E.) on the rocks ( 

 Guernsey, 255. 



Hoffert (H. H.) on a new apparatus 

 for colour-combinations, 81. 



Hopps (J.) on the alterations in the 

 electrical resistances of metallic 

 wires produced by coiling and un- 

 coiling, 433. 



Howard (A.) on the thermal rela- 

 tionship between water and certain 

 salts, 123. 



Hurion (M.) on a change in the phy- 

 sical properties of bismuth when 

 placed in the magnetic field, 389. 



