522 



INDEX. 



hydrochloric acid in the gastric jYiice, 

 391. 



Houghton (Lord) elected, 155 ; admitted, 

 291. 



Huggins (W.), note on a method of view- 

 ing the solar prominences without an 

 eclipse, 302. 



■ , note on the heat of the stars, 309. 



Hulke (J. W.), note on the blood-vessel- 

 system of the retina of the hedgehog, 

 being a fourth contribution to the ana- 

 tomy of the retina, 357. 



Human body, on the temperature of, in 

 health, 287. 



- — — , on some of the minor fluctuations 

 in the temperature of the, when at rest, 

 and their cause, 419. 



Hydride of propyl, on the derivatives of, 

 372. 



Hydriodic acid, action of light on, 101. 

 Hydrobromic acid, action of light on, 99. 

 Hydrochloric acid, action of light on, 101. 



, on the source of free, in the gastric 



juice, 391. 



, action of, on morphia, 455 ; on co- 



deia, 460. 



Hydrofluoric acid, on, 256; anhydrous, 



256 ; aqueous, 259. 

 Hydrogen, on the relation of, to palladium, 



212. 



Hydrogenium, characteristics of, 220. 



, additional observations on, 500 ; 



density of, 506. 



Iodide of allyl, action of light on, 98. 



of isopropyl, action of light on, 98. 



Iron wire, on a momentary molecular 

 change in, 260. 



Janssen (M.) on the solar protuberances, 

 276. 



Jargonium, a new elementary substance 

 associated with zirconium, 511 ; spec- 

 tra of, 512. 



Jupiter, on the corrections, of Bouvard's 

 elements of, 344. 



Kaleidophone, notice of, 145. 



Kew magnetic curves, preliminary inves- 

 tigation in the laws of the peaks and 

 hollows, 462. 



Kew, comparison with Stonyhurst of cer- 

 tain curves of the declination magneto- 

 graphs, 236. 



, dip observations at, 283. 



Key (A. C.) admitted, 103. 



King (H. W.), observations of the total 

 solar eclipse of August 18, 1868, 127. 



Lama, on remains of a large extinct, from 

 quaternary deposits in the valley of 

 Mexico, 405. 



Light, action of, on nitrite of amyl, 94 ; 



on iodide of allyl, 98 ; on iodide of iso- 

 propyl, 98 ; on hydrobromic acid, 99 ; 

 on hydrochloric acid, 101; on hy- 

 driodic acid, 101. 



Light, on a new series of chemical reac- 

 tions produced by, 92. 



, on the measurement of the lumi- 

 nous intensity of, 166, 358. 



, on the polarization of, by cloudy 



matter generally, 223. 



, heat, and sound, phenomena of, ac- 

 companying fall of meteorites, 155. 



Lightning spectrum, on the, 61. 



Liquids, on the thermal resistance of, 

 234. 



Lisbon, on the reappearance of some 

 periods of declination disturbance at, 

 238. 



Lockyer (J. N.), notice of an observation 

 of the spectrum of a solar prominence, 

 91, 104. 



, supplementary note on a spectrum 



of a solar prominence, 128. 

 , spectroscopic observations of the 



sun : No. II., 128, 131 j No. III., 350 ; 



No. IV., 415. 

 admitted, 471. 



Loewy (B.) on the behaviour of thermo- 

 meters in a vacuum, 319. 



Loftusia, an arenaceous foraminifer, de- 

 scription of, 400. 



Luno- diurnal and other lunar inequalities 

 of terrestrial magnetism, 163. 



Luteine, results of researches on, 253. 



M'Clean (J. R) admitted, 453. 

 Macneill (Sir J.) readmitted, 252. 

 Macrauclienia patachoiiica, on the molar 



teeth of, 454. 

 Magnetic curves, on the laws regulating 



the peaks and hollows exhibited in, 



462. 



declination, on the solar and lunar 



variations of, at Bombay, 161. 



dip, on the unehminated instru- 

 mental error in the observations of, 427. 



survey of south polar regions, com- 

 pletion of reduction of, 143. 



survey of the west of France, 486. 



Magnetical observations made at Ascen- . 

 sion Island, 397. 



Magnetism, terrestrial, on the diurnal and 

 annual inequalities of, at Greenwich, 

 1858 to 1863, 163 ; luno-diurnal and 

 other lunar inequalities of, 164. 



and heat, on the development of 



electric currents by, 265. 



Magnetographs, results of a preliminary 

 comparison of certain curves of the 

 Kew and Stonyhurst declination, 236. 



Maskelyne (N. S.), preliminary notice on 

 the mineral constituents of the Brei- 

 tenbach meteorite, 370. 



