470 



INDEX. 



Jefferisite, on the crystal] ographic 

 structure and chemical composition 

 of, 252. 

 Karstenite, on some crystalline forms 



of, 122. 

 Ketteler (Prof.) on the boundary-con- 

 ditions of reflection and refraction 

 for the principal section of media 

 in motion, 411. 

 Kohlrausch (F.) on the expansibility 

 of ebonite by heat, 156 ; on the 

 absolute value of the Siemens mer- 

 cury unit of electrical resistance, 

 294, 342 ; on a variation-barome- 

 ter, 362. 

 Lallemand (A.) on some phenomena 



of illumination, 77. 

 light, measurements of the polariza- 

 tion of the, reflected by the sky and 

 by one or more plates of glass, J 27 ; 

 on some phenomena of polarization 

 by diffusion of, 205 ; on the action 

 of, on the electrical resistance of 

 selenium, 216 ; on extraordinary 

 developments of, in grinding hard 

 stones, 237 ; on the sensibility of 

 bromide of silver to, 273 ; on the 

 intensity of reflected and refracted, 

 411. 

 Lippmann (G.) on the connexion be- 

 tween capillary and electrical phe- 

 nomena, 281. 

 Liquids, on galvanic polarization in, 



145. 

 Lockyer (J. N.) on the quantitative 

 analysis of certain alloys by means 

 of the spectroscope, 311 ; on spec- 

 trum-analysis, 384. 

 Lohse (O). on the spectrum of the 

 light of exploding gun-cotton, 31.9. 

 M'Kichan (D.) on the number of 

 electrostatic units in the electro- 

 magnetic unit, 218. 

 Madler (Dr. J. H. von), notice of the 



late, 320. 

 Magnetic forces, on the theory of the, 



318. 

 Magnetism, on the source of terres- 

 trial, 14 ; on the 26-day period of 

 terrestrial, 311; on the calorific 

 effects of the, in an electromagnet 

 with several poles, 392: on the 

 effects of, on the electric discharge 

 through a rarefied gas, 462. 



of steel, on the permanent, 



315. 



Maxwell (J. C.) on double refraction 



in a viscous fluid in motion, 390. 

 Metallic alloys, on the electromotive 

 and thermoelectric forces of some, 

 in contact with copper, 28. 

 Micas, on the crystallographic and 

 chemical relations of the vermicu- 

 lites to the, 241. 

 Microscopes, on the limits of the 



effective power of, 236. 

 Milky Way, on the constitution of the, 



370. 

 Miller (Prof. W. H.) on quartz, ice, 



and Karstenite, 122. 

 Mines, on the composition of the 



waters from some, 164. 

 Minot (J. J.) on a spark-adjuster for 



the Holtz machine, 467. 

 Moon (R.) on the analytical princi- 

 ples of hydrodynamics, 143 ; on 

 the measure of work in the theory 

 of energy, 291. 

 Moutier (J.) on the discharge of elec- 

 trified conductors, 157. 

 Muir (J.) on Sylvester's and other 

 forms of continued fraction for 

 circle-quadrature, 331. 

 Newton's coloured rings, experimen- 

 tal researches on, 236. 

 Nickel, on the molecular changes that 

 accompany the magnetization of, 

 51. 

 Noggerath (Prof. J.) on extraordinary 

 developments of light in grinding 

 hard stones, 237. 

 Ocean, on the chemistry of the, 1. 

 Ocean-currents, on the phvsical cause 



of, 94, 168,359,434. 

 Oolites of Northamptonshire, on the, 



74. 

 Ozone, on the composition of the 



unit of, 310. 

 Palladium, on hydrogenized, 397. 

 Phillips (J. A.) on the composition 



of certain mine waters, 164. 

 Photography, improvements in, 273. 

 Pickering (Prof. E. C.) on the polar- 

 ization of the light reflected by the 

 sky, and by one or more plates of 

 glass, 127." 

 "Polarization, on some phenomena of, 



by diffusion of light, 205. 

 Quartz, on some crystalline forms of, 



122. 

 Quincke (G.) on the determination of 

 the prime angle of incidence and 



