INDEX. 



Hennessy (J. P.) on some facts con- 

 nected with geometrical reasoning, 

 127. 



Herapath (T. J.) on the chemistry 

 of the ancient Egyptians, 339. 



EUgginson (F.) on an explosive me- 

 teorite, 215. 



Hunt (T. S.) on the theory of che- 

 mical changes, and on equivalent 

 volumes, 626. 



HydrargyromethyUum, researches on, 

 61, 260. 



Hydrodynamics, on the principles of, 

 86. 



Ice, on groimd, found in the beds of 

 running streams, 340. 



Iodine, on the reproduction of en- 

 gravings and drawings by means of 

 the vapour of, 388. 



Iris, observations on the, seen in 

 water, 439. 



Iron, on the correction of comjpass 

 errors due to the presence of, in 

 ships, 61 ; on the nature of the 

 attraction of, on the poles of mag- 

 nets, ib. ; on the induced currents 

 produced by the torsion of, 69; 

 on the structural conditions of, 389. 



Jerrard (G. B.) on a method of trans- 

 forming equations by means of 

 symmetric functions, 364, 493. 



Jones (H. B.) on the solution of 

 urinary calculi in tUlute saline 

 fluids, by the aid of electricity, 137. 



Jopling (J.) on the relation of car- 

 dioids to elHpses, 136. 



Joule (J. P.) on the oeconomical pro- 

 duction of mechanical effect from 

 chemical forces, 1 . 



Jupiter, on the periods of revolution 



of the satellites of, 309. 

 Kepler' sproblem,newsolutionof, 132. 



Kingsley (Rev. Mr.) on the applica- 

 tion of photography to the micro- 

 scope, 469. 



Kirkman (Rev. T. P.) on combina- 

 tions, 11. 



Latham (Dr. R. G.) on the subjecti- 

 vity of certain classes in ethnologv, 

 326. 



Life contingencies, on the valuation 

 of, 39. 



Light, on the direction of the vibra- 

 tions of the luminiferous sether in 

 plane-polarized, 49; on the che- 

 mical action of, 67. 



Lowe (E. J.) on the reproduction of 

 the toad and £rog, 4o6. 



Luminous arch, on a peculiarity ob* 

 served in a, 308. 



Lunar geology, on, 143. 



Theory, Goclfray's Elementary 



Treatise on the, reviewed, 635. 



Madder-dyeing, observations on, 609. 



Magnetic disturbances, on periodical 

 laws in the larger, 379. 



force, researches on the, 218. • 



Magnetism, terrestrial, relation be- 

 tween, and sun-spots, 67 y 226, 307. 



Magnets, on the nature of the at- 

 traction of iron on the poles of, 

 51. 



Mallet (Dr. J. W.), analysis of eu- 

 clase, 127 ; on a siliceous deposit 

 from the hot volcanic springs of 

 Taupo, 285. ,„, ....u.^ivii^A 



Masson (A.) on the el^l^trip luiA 



468. ..M<f 

 Mathematics and mathematiciana^liifl 



marks on, 185, 514. 

 Mechanical energy, on the restoration 



of, from an unequally heated space, 



102. 

 Metals, permeability of, to mercmyj 



469. ,^„p 

 Meteorite, on an explosive, 215. v^ 

 Meteorological observations, 71, 151^ 



231,311,391,471. 



Meteorology of the English Lake di- 

 strict, 464. 



Michea (M.) on the presence of sugar 

 in the urine of epileptic patients^ 

 230. 



Microscope, on the appUcation of 

 photography to the, 459. 



Miller (J. F.) on the meteorology (rf 

 the Enghsh Lake district, 464. 



Mineralogical notices : — euclase, 127 ; 

 thenardite, 373 ; chiviatite, 467. 



Minerals, on the conductibiUty of, 

 for voltaic electricity, 12; on the 

 superposition of certain, 227 ; oft 

 the artificial production of, 384. 



Mineral waters, on the presence of 

 boracic acid in, 230. 



Napier (J.) on copper smelting, 30^ 

 175, 346, 486. 



Nesodon, on some species of the ex- 

 tinct genus, 211. 



Newport (G.) on the impregnation of 

 the ovum in the Amphibia, 62. 



Nickl^s (J.) on the permeability of 

 metals to mercury, 469. 



Niepce (M. de) on the reproduction 

 of engravings and drawings by means 

 of the vapour of iodine^ 388. 



