486 



INDEX. 



Diffraction-spectrum photography, 

 on, 417. 



Donkin (W. F.) on the direct syn- 

 thesis of ammonia, 336. 



Draper (Prof. H.) on diffraction- 

 spectrum photograplry, 417. 



Earth, on some results of the con- 

 traction of the, 41, 131, 210, 276, 

 363. 



Edlund (E.) on the nature of galvanic 

 resistance and on a theoretic de- 

 duction of Ohm's law, 201. 



Electrical figures on conductors, on, 

 86. 



Electricity, on the law for the propa- 

 gation of, 73 ; on a relation be- 

 tween heat and static, 257, 450. 



Emerald, on the colouring-matter of 

 the, 314. 



Emsmann (Dr. H.) on solution of 

 nitrate of nickel as an absorption- 

 preparation, 329. 



Energy, on the measure of work in 

 the theory of, 219. 



Equations, differential, on integrating, 

 388. 



Evaporation, experiments on, 483. 



Eyepiece-micrometer, on a conveni- 

 ent, for the spectroscope, 176. 



Feddersen (W.) on thermodiffusion of 

 gases, 55. 



Fluorescent relations of certain hy- 

 drocarbons found in petroleum dis- 

 tillates, on the, 89. 



Galvanic coil, on the attraction of a, 

 on a small magnetic mass, 231. 



resistance, on the nature of,201. 



Galvanometer, on the differential, 469. 



Gaseous pressure, note on, 87. 



Gases, on thermodiffusion of, 55 ; on 

 the passage of, through colloid 

 membranes of vegetable origin, 

 251 ; on the determination of the 

 specific heat of, at constant vo- 

 lumes, 289, 361 ; on the effect of 

 pressure on the character of the 

 spectra of, 406 ; on the condensa- 

 tion of, by wood-charcoal, 410. 



Geological Society, proceedings of 

 the, 173, 326. 



Glaisher (J. W. L.) on the form of 

 the cells of bees, 103. 



Gruithuisen's horizontal pendulum, 

 on the, 412. 



Guthrie (F.) on a relation between 

 heat and static electricity, 257. 



Hamilton's dynamic principle in ther- 

 modynamics, on, 426. 



Heat, on the determination of de- 

 grees of, in absolute measure, 62; 

 on the formula for the, developed 

 by a galvanic current, 201 ; on a 

 relation between, and static elec- 

 tricity, 257, 450. 



Heaviside (O.) on the differential gal- 

 vanometer, 469. 



Highton (H.) on duplex telegraphy, 

 88. 



Hydrocarbons, on the fluorescent re- 

 lations of certain, 89. 



Hvdrodynamics, on the principles of, 

 "159, 247, 309, 446. 



Interference-phenomenon, on a re- 

 markable, 332. 



Iron, on the maximum of magnetism 

 of, 140 ; on the effects of magneti- 

 zation in changing the dimensions 

 of bars of, 177 ; on certain remark- 

 able molecular changes occurring 

 in, at a low red heat, 472. 



Jago (Dr. J.) on visible direction, 80. 



Lee (G. H.) on the effect of pressure 

 on the character of the spectra of 

 gases, 406. 



Light, on the reflection of, 252. 



Lignite, analysis of a, from Ballintov, 

 244. 



Liquids, on the condensation of, by 

 wood-charcoal, 410. 



Lockyer (J. N.) on spectrum-ana- 

 lysis, 407. 



Lorenz (L.) on the determination of 

 degrees of heat in absolute mea- 

 sure, 62. 



Lunar atmosphere, on the possible 

 existence of a, 411. 



Magnetic metals, on the relationship 

 of the, 478. 



permeability, on, 140. 



Magnetization, on the effects of, in 

 changing the dimensions of iron 

 and steel bars, 1/7- 



Magnets, on Jamin's compound, 176; 

 on the directive power of large 

 steel, 221. 



Maxwell (Prof. J. C.) on molecules, 

 453. 



Mayer (Prof. A. M.) on the effects of 

 magnetization in changing the di- 

 mensions of iron and steel bars, 177- 



Mechanical theorem, on a new, rela- 

 tive to stationary motions, 236,266. 



