1042 



INDEX. 



Glaisher (J.) on the corrections necessary 

 to be applied to meteorological obser- 

 vations made at particular periods, in 

 order to deduce from them monthly 

 means, 743. 



• on the reduction of the thermome- 



trical observations made at the apart- 

 ments of the Royal Society, from the 

 year 1774 to 1781, and from 1787 to 

 1843, 820, 925. 



, sequel to a paper on the reduction 



of the theruiometrical observations 

 made at the apartments of the Royal 

 Societ}', with an appendix, 926. 



— — on the meteorologv of England du- 

 ring the years 1847, 1848 and 1849, 945. 



Glass, flint, on the annealing of ; colour 

 of removable, 750, 



Glottis, movements of, during vocaliza- 

 tion, 624 ; acoustic relations of, 625. 



Goodman (J.) on a new and practical 

 form of voltaic battery of the highest 

 powers, in which potassium forms the 

 positive element, 661. 



Goodsir (J.) on the supra-ienal, thymus, 

 and thyroid bodies, 596. 



Government grant, £1000, for the encou- 

 ragement of science, 861. 



Graham (Thos.) on the motion of gases, 

 p. 2, 848. 



^ on the diffusion of liquids, 897. 



— — , supplementary observations on the 

 diffusion of liquids, 980. 



Gravitation, universal law of, as a parti- 

 cular case of approximation, &c., 831. 



Gravity, possible relation of to electricity, 

 994; experiments with falling cylin- 

 ders, with a helix, with a simultaneous 

 rise and fall, negative results, 995. 



Gray (H.) on the development of the 

 retina and optic nerve, and of the mem- 

 branous labyrinth and auditorv nerve, 

 912. 



Grove (W. R.) on the gas voltaic battery, 



voltaic action of phosphorus, sulphur, 



and hydrocarbons, 557. 

 on certain phenomena of voltaic 



ignition, and on the decomposition of 



water into its constituent gases by 



heat, 657. 



, royal medal awarded to, 702. 



, on the effect of surrounding media 



on voltaic ignition, 783. 

 on the direct production of heat 



by magnetism, 826. 

 Guano, lithic acid in, converted into 



oxalic, 512 ; difference of African and 



South American, 513. 



Hail, a result of meteoric phenomena, 

 811. 



Haile (J. C.) on the comet of 1844-45, 

 600. 



Hailstone (Rev. J.), obituary notice of, 

 711. 



Halford (Sir H., Bart.), obituary notice 

 of, 524. 



Hall (Capt. Basil), obituary notice of, 

 526. 



Hall (I\I.), researches into the effects of 

 certain physical and chemical agents 

 on the nervous system, 667, 674. 



Hamilton (Sir W.), theory of quater- 

 nions, 865. 



HargTcave (C. J.) on the solution of li- 

 near differential equations, 687. 



, royal medal awarded to, 773. 



, general methods in analysis for the 



resolution of linear equations in finite 

 differences and Unear differential equa- 

 tions, 814. 



Harrison (jM.), description of a self-re- 

 gistering thermometer, 550. 



Haughton (Sir G. C.) on the relative 

 dynamic value of the degrees of the 

 compass ; and of the cause of the 

 needle resting in the magnetic meri- 

 dian, 626. 



, obituary notice of, 884. 



Havana, hurricane at, account of, 674. 



Hay (W. J.) on the protection of iron 

 from oxidation, and from becoming 

 fonl when it is exposed to the action 

 of sea and other waters, 754. 



Heale (J. N.) on galvanic currents ex- 

 isting in the blood, 732. 



Hearn (G. W.) on the cause of the dis- 

 crepancies observed by Mr. Baily, with 

 the Cavendisli apparatus for determi- 

 ning the mean densitv of the earth, 

 638. 



Heart, on the nervous system of, 675, 

 789. 



Heat, produced by condensation of air, 

 518; determined by basic substitu- 

 tions, 523. 



, new theory of, 604. 



, radiation of, at night, from the 



earth's surface, and ft-om various bodies 

 placed on or near it, 664. 



, disengaged during metallic substi- 

 tutions, 732. 



, generated in wires by voltaic 



currents ; less with hydrogen than 

 with other gases, independent of the ' 

 specific heat of gases or liquids, 783 ; 

 dependent on molecular character, 

 784. 



, direct production of, by magnetism, 



826. 



, on the mechanical equivalent of ; 



relation of, to the expenditure of 



