INDEX. 



561 



Gibbs (Dr. TV.) on a new form of 

 spectroscope, 240. 



Glaciers, on the theory of the motion 

 of, 221. 



Gold, on some artificial crystals of, 

 435. 



Gore (G.) on the properties of electro- 

 deposited antimony, 479. 



Guinet (E.) on dialysis, 80. 



Haidinger (Prof.) on a pseudomorph 

 of mica after Cordierite, 324. 



Hamilton (Sir R.) on the osculating 

 twisted cubic to a curve of double 

 curvature, 556. 



Haughton (Rev. S.) on the reflexion 

 of polarized light from polished 

 surfaces, 478. 



Hayesine, on the formation of, 113. 



Heat, on a new method of determining 

 the conductibility of bodies for, 

 130; remarks on the dvnamical 

 theory of, 220, 263, 368, 429, 467, 

 493 ; on the sources of, 242 ; on 

 the simultaneous distribution of, 

 throughout superficial parts of the 

 earth, 311. 



Heath (D. D.) on force and on heat, 

 531. 



Hennessy (Prof. II . G.) on the simulta- 

 neous distribution of heat through- 

 out superficial parts of the earth, 

 311. 



Hopkins (W.) on the theory of the 

 motion of glaciers, 224. 



Hunt (T. S.) on the nature of nitrogen 

 and the theory of nitrification, 27. 



Hunter (J.) on the absorption of gases 

 by charcoal, 364. 



Induction-coil of great power, on an, 

 413. 



Insulating bodies, on the inductive 

 capacity of, 556. 



Jenkin (F.) on the transmission of 

 electric signals through submarine 

 cables, 483. 



Johnson (S. W.) on the equivalent 

 and spectrum of caesium, 196. 



Joule (Dr.) on a new and extremely 

 sensitive thermometer, 320; on 

 the thermal effects of fluids in mo- 

 tion, 486. 



Kammerer (M.) on the isolation of 

 fluorine, 213. 



Kekule (Prof.) on bisulphide of ace- 

 tyle, 216. 



Kirchhoff (G.) on the history of spec- 



trum analysis, and of the analysis 

 of the solar atmosphere, 250. 



Krafts (M.) on organic silicon com- 

 pounds, 543. 



Kuhlmann (M.) on the extraction of 

 thallium, 211. 



Lamy (M.) on thallium and its salts, 

 210. 



Lang (Dr. V. von) on the crystalline 

 form of lanthanite, 43 ; on new 

 forms of mesotype, 43 ; on the 

 crystalline form and optical pro- 

 perties of thallium, 248; on the 

 crystalline form and optical pro- 

 perties of malachite, 432 ; on some 

 artificial crystals of gold, 435 ; on 

 some combinations of eudialyte, 

 436. 



Lanthanite, on the crystalline form 

 of, 43. 



Lautemann (M.) on the action of 

 iodide of phosphorus on picric acid, 

 540. 



Lead and zinc, on a native sulphide 

 of, 110. 



Lenses, on the forms of, proper for 

 the negative eyepieces of tele- 

 scopes, 155. 



Light, on the measurement of diffused, 

 by opake bodies, 19 ; on the motion 

 of camphor towards the, 38, 114, 

 492 ; on the velocity of, 76 ; on the 

 polarization of, by rough and white 

 surfaces, 344 ; on the reflexion of 

 polarized, from polished surfaces, 

 4/8. 



Linnemann (M.) on bisulphide of acc- 

 tyle, 216; on benzophenone, 539; 

 on propylic alcohol, 545. 



Magnetic action, on the change of 

 rate produced in a clock by, 325. 



disturbances, on the forces con- 

 cerned in producing the larger, 

 480. 



Magnetism, on the difference in tlic 

 properties of hot-rolled and cold- 

 rolled iron in retaining induced, 

 151. 



Malachite, on the crystalline form and 

 optical properties of, 432. 



Mallet (R.) on earthquake- wave ex- 

 periments, 146. 



Marble, on the artificial production 

 of, 542. 



Marignac (Prof.) on the tungstates, 

 213. 



