648 



INDEX. 



Huggins (W.), note on the telescopic ap- 

 pearance of Encke's comet, 87- 



on the spectrum of the great nebula 



in Orion, and on the motions of some 

 stars towards or from the earth, 379. 



Hydr iodic acid, action of, on codeia in 

 presence of phosphorus, 8, 20. 



, action of, on morphia in presence of 



phosphorus, 203. 



Hydrochloric acid, action of. on codeia, 

 282. 



Hygrometer, on a new, 180. 



Iceland spar, on the law of extraordinary 

 refraction in, 443. 



India, on a new great theodolite and 

 zenith-sector to be used on the Great 

 Trigonometrical Survey of. 317, 372. 



, pendulum experiments in. 52. 



J anssen (Iff,), note on the eclipse of the sun 

 (Dec. 1S71) as observed at Sholoor, 138. 

 Jevons (W. S.), admitted, 414. 

 Johnson (G.), admitted, 379. 



Kew Committee, operations of, 50. 



heliograph, on observations taken 



with, 199. 



— — Observatory, endowment of, by J. P. 

 Gassiot, 49. 



Lee (E. J.), remarks on the sense of sight 

 in birds, accompanied by a description 

 of the eye, and particularly of the 

 ciliary muscle, in three species of the 

 order Eajpaces, 351 ; supplement, 358. 



Life, experiments concerning the evolu- 

 tion of, from lifeless matter, 140. 



Light, on a supposed alteration in the 

 amount of astronomical aberration of, 

 produced by the passage of the light 

 through a considerable thickness of re- 

 fracting medium, 35. 



, corrections to the computed lengths 



of waves of, 21. 



, on the rings produced by crystals 



when submitted to circularly polarized. 

 333. 



Liversidge (A.) on supersaturated saline 



solutions, 497. 

 Logarithms, on the numerical values of, 



27 (second paper). 

 Loewy (B.), recent researches in solar 



physics, 82 ; further investigations, 210 ; 



solar physics (ILL), 289 ; note, 290. 

 Lunar atmospheric tide, confirmation of 



existence of, 53. 

 Lyell (Sir C), note on fossil plants from 



the arctic regions, 53. 



Macalister (A,), tbe myology of the Chei- 

 roptera, 94. 



; MFarlane (D.), experiments made to 

 determine surface-conductivity for heat 

 in absolute measure, 90. 



Magnetic declination, on the lunar varia- 

 tions of, at Bombay, 135. 



, on the present amount of 



westerly, and its annual changes on the 

 coasts of Great Britain, 434. 

 I Magnetic force, on the 26-day period of 

 the earth's, 417. 



, the absolute direction and 



intensity of the earth's, at Bombay, and 

 its secular and annual variations, 107. 



survey of the east of France in 1869, 



39. 



Magnetical observations at Xew Obser- 

 vatory, 50. 



Magnetism of the earth, an effect of the 

 sun's rotation, 21, 51. 



. terrestrial, contributions to, No. 



XIII., 443. 



Magnets, experiments on the directive 

 power of large steel, 158. 



Magnus (H. G.), obituary notice of, xxvii. 



Mallet (J. W.), examination of the gases 

 occluded in meteoric iron from Augusta 

 Co., Virginia, 365. 



Mallet (R.), volcanic energy: an attempt 

 to develope its true origin and cosmical 

 relations, 438. 



Matter, considerations on the abrupt 

 change at boiling or condensing in re- 

 ference to the continuity of the fluid 

 state of, 1. 



Maxwell (J. C.) on the induction of 

 electric currents in an infinite plane 

 sheet of uniform conductivity, 160. 



Mayer (J. R.), Coplev medal awarded to, 



54. 



Mediterranean, report of further scientific 

 researches in the, 535. 

 [ Meteoric iron, examination of the gases 



occluded in, 365. 

 j Methylphosphine, 224. 

 j Mixtures or solutions, on certain relations 

 existing between the specific heat of, 

 and the heat evolved or absorbed in 

 their formation, 336. 

 Monads, on some heterogenetic modes of 



origin of flagellated, 239. 

 Morphia, action of hydriodic acid on, 203. 

 Multiple battery, on a mode of measuring 

 the internal resistance of a, 159. 

 I Murchison (Sir R. L), obituary notice of, 

 xxxi. 



Muscle, on the most perfect form of a 

 plane quadrilateral connecting two 

 bones, 328. 



, skew, theory of, 330. 



Nares (Capt. G. S.), investigations of the 

 currents in the strait of Gibraltar, made 



