550 



INDEX. 



Grove (W. R.) on a method of in- 

 creasing certain effects of induced 

 electricity, 1. 



Hamilton (Sir W. R. ) on some exten- 

 sions of quaternions, 46, 280. 



Hart (R.) on an appearance seen in 

 the moon, 238. 



Haughton (Rev. S.) on the chemical 

 composition and optical properties 

 of the mica of the Dublin, Wicklow 

 and Carlow granites, 272. 



Heat, on the alteration of volume of 

 some substances by, 477; on the 

 dynamical theory of, 523. 



Heddle (Dr. M. F.'), analysis of the 

 mineral Edingtonite, 179 ; on Bri- 

 tish Pectolites, 248 ; on table spar 

 from the Morne Mountains, 452. 



Heintz (Dr.) on the composition and 

 properties of fats, 74. 



Henry (T. H.) on a new compound of 

 gold and mercury, 458. 



Herapath (W. B.) on the properties 

 of the sulphate of iodo-quinine or 

 Herapathite, 366. 



Hooker (Dr. J. D.) on the structure 

 and functions of the rostellum in 

 Listera ovata, 64; on the struc- 

 ture of some limestone nodules, 235. 



Hopkins (T.) On the Atmospheric 

 Changes which produce Rain and 

 Wind, and the Fluctuations of the 

 Barometer, reviewed, 54. 



Horner (L.) on the geological history 

 of the alluvial land of Egypt, 465. 



Hunt (T. S.), examinations of some 

 felspathic rocks, 354 ; on the mi- 

 neral Wilsonite, 382. 



Huxley (T. H.) on the anatomy of the 

 Brachiopoda, 395. 



Hygrometer, description of a new, 

 143. 



Induction sparks of Ruhmkorff's ap- 

 paratus, on the luminous coat of 

 the, 546. 



Insects, on the respiratory movements 

 of, 229. 



Integrals, on the theory of definite, 

 230. 



Invariants, on the theory of, 384. 



Iodo-quinine, on the properties of the 

 sulphate of, 366. 



Jago (J.) on ocular spectres and struc- 

 tures as mutual exponents, 305. 



Jennings (F. M.) on an analysis of 

 some potash and soda felspars, 51 1. 



Knox (G. J.) on the existence of an 

 electrical sether through space, 

 457. 



Kopp (H.) on the alteration of the 

 volume of some substances by heat- 

 ing and fusion, 477- 



Lenses, on the oblique aberration of, 

 342. 



Leucophane, on the crystalline form 

 of, 510. 



Lhermite (M.) on some experiments 

 relating to endosmose, 544. 



Light, on the action of the violet and 

 ultra-violet invisible, 114; on the 

 applicability of gelatine paper as a 

 medium for colouring, 155 ; on the 

 interference of, near a caustic, 321 ; 

 researches on, 327 ; on the aberra- 

 tion of, 430. 



Limestone nodules enclosed in seams 

 of bituminous coal, on the struc- 

 ture of some, 235. 



Listera ovata, on the structure and 

 functions of the rostellum in, 64. 



Lubbock (Sir J. W.) on the heat of 

 vapours, 25. 



Luminiferous medium, on the possible 

 density of the, 36. 



M. (W. fl.) on the. adjustment of cry- 

 stals for measurement with the re- 

 flective goniometer, 138. 



Macdonald ( J. D.) on the anatomy of 

 the Macgillivrayia pelagica and 

 Cheletropis Huxleyi, 297, 542. 



Macgillivrayia, on the anatomv of, 

 297, 542. 



Magnet, on the nature of the force 

 by which bodies are repelled from 

 the poles of a, 387- 



Magnetic force, elementary demon- 

 strations of propositions in the 

 theory of, 241. 



induction, researches on, 518. 



medium, on the existence of a, 



in space, 205, 290,541. 



philosophy, on some points of, 



81, 253. 



power of oxygen, on the, 474. 



Magnetism, on the periodical varia- 

 tions of terrestrial, 432 ; on the 

 optical properties developed in 

 transparent bodies by the action of, 

 481. 



Magnus (Prof.) on the elastic forces 

 of vapours of mixtures of two liquids, 

 44. 



