INDEX. 



557 



Fish, fossil, of the carboniferous pe- 

 riod, on some new, 311. 



Fluid, elastic, on the vibrations of a, 

 360. 



Forster (Mr.) on some remarkable 

 appearances during the total eclipse 

 of the moon on March 19, 1848, 

 160. 



Fremy (M.) on the preparation of 

 meta-antimoniate of potash as a 

 test for soda, 324 ; on the solubi- 

 lity of the hydrates of copper and 

 chromium, &c. in potash and soda, 

 325 ; on the ripening of fruits and 

 the gelatinous bodies of vegetables, 

 394 ; on the meta-antimoniate of 

 ammonia, 402. 



Fruits, on the ripening of, 394. 



Galvanic battery, on the construction 

 and power of a new form of, 49. 



Garancine, observations on the tincto- 

 rial power of, 294. 



Geometry and geometers, notices re- 

 specting, 201, 513. 



Gerhardt (C.) on essential oils, 165 ; 

 on the composition of orcine and its 

 derivatives, 322 ; on sulphomor- 

 phide and sulphonarcotide, 396. 



Gilliss (S. M.) on some proposed as- 

 tronomical observations, 549. 



Glaisher (J.) on the weather during 

 the quarter ending June 30, 1848, 

 186 ; on the weather during the 

 quarter ending September 30, 1848, 

 365. 



Gold, on the employment of the chlo- 

 ride of, as a test for organic matter 

 in common water, 77- 



Goodman (J.) on a new and practical 

 voltaic battery of the highest powers, 

 207. 



Gregory (Dr.) on the preparation of 

 creatine, 164. 



Gresham College, some account of, 

 403. 



Halley's comet, observations of, 296. 



Hamilton (Sir W. R.) on quaternions, 

 58. 



Heineken (N. S.) on a singular irre- 

 gularity of vision, 318 ; on a simple 

 and ready way of producing tools 

 for grinding lenses, 480. 



Heintz (W.) on some phosphates of 

 the protoxide of manganese, 551. 



Hennessy (H.) on the attraction of 

 .spheroids, 24. 



Henwood (W. J.) on a colourless at- 

 mospheric arch seen in the interior 

 of Brazil, 295. 



Hermann (M.) on different varieties 

 of epidote, 483. 



Herschel's (Sir J. F. W.) Results of 

 Astronomical Observations made 

 during the years 1834, 1835, 1836, 

 1837, 1838, at the Cape of Good 

 Hope, notice of, 145, 231, 296; on 

 the distribution of stars, and of the 

 constitution of the galaxy in the 

 southern hemisphere, 231 ; on Hal- 

 ley's comet, with remarks on its 

 physical condition, and that of 

 comets in general, 296 ; on the sa- 

 tellites of Saturn, 303; on solar 

 spots, 305. 



Higgin (J.) on the colouring matters 

 of madder, 282. 



Hodgson (Mr.)on a self-luminous spot 

 in the moon, 74. 



Homersham (C. S.) on the depth of 

 rain which falls in the same localities 

 at different altitudes, 158. 



Hornung (E. G.) on the ceconomical 

 preparation of oxide of antimony, 

 76. 



Hyperbola, on a property of the, 

 546. 



Iguanodon, on the structure of the 

 jaws and teeth of the, 156. 



Induction, researches on, 89, 275, 

 439. 



Integration, on the extension of the 

 theorem of Leibnitz to, 335. 



Iron, on the arsenites of, 481; on the 

 passive state of, 509. 



Johnston's (Mr.) Physical Atlas, notice 

 of, 392. 



Keely's (Prof. G. W.) determinations 

 of the magnetic inclination andforce 

 in Nova Scotia and New Brunswick, 

 noticed in 1847, 64. 



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

 nions, and homoid products of sums 

 of n squares, 447, 494. 



Kratzer, Nicholas, biographical notice 

 of, 243. 



Lactic acid, on the existence of, in 

 living bodies, 128. 



Lassell (W.) on Mimas, the closest 

 and most interior satellite of Saturn, 

 66 ; on the satellites of Ui'anus, 67 ; 

 on the discovery of a new satellite 

 of Saturn, 477- 



