INDEX. 



579 



Lowe (E. J.) on the mean tempera- 

 ture of the Observatory of High- 

 field House, near Nottingham, from 

 1810 to 1840, 562. 



Lutidine, on the preparation and pro- 

 perties of, 465. 



Magnecrystallic action, researches on, 

 174,574. 



Magnetic declination, on the annual 

 variation of the, at different periods 

 oftheday, 491. 



Magnetic forces, on induced, 493. 



Magnetism, of pewter coils, on the, 

 230 ; investigations in, 310 ; on the 

 identity of, with electricity, light, 

 and heat, 498. 



, terrestrial, corrections of the 



constants in the general theory of, 

 71 ; on the cause of, 235. 



Martin (P. J.) on the anticlinal line 

 of the London and Hampshire ba- 

 sins, 41, 126, 189, 278, 366, 471. 



Matlockite, description and analysis 

 of, 120. 



Mechanics, on symbolical, 121. 



Megatherium, memoir on the, 238. 



Mene (M.) on the presence of am- 

 monia in hail-stones, 331. 



Meteorological observations, 82, 163, 

 251, 331, 427, 562. 



Methylamine, 460. 



Mineralogical Notices : — Beudantite, 

 21 ; Loganite, 65 5 Matlockite, 120; 

 orangite, 390. 



Minerals, on the artificial production 

 of crystallized, 161, 246, 248, 330. 



Mirror-stereoscope, description of a 

 simple, 29. 



Muspratt (Dr. S.) on carmufellic acid, 

 293. 



Nasmyth (J.) on the source of light, 

 321. 



Nelson (Dr. H.) on the reproduction 

 of the Ascaris Mystax, 157- 



Nilotic discovery, summary of recent, 

 260. 



O'Brien (Rev. M.) on symbolical me- 

 chanics, 121 ; on symbolical physics, 

 149. 



Orangite, description of the new mi- 

 neral, 390. 



Owen (Prof.) on the Megatherium, 

 238. 



Oxygen, on the joint influence exerted 

 by light and the oxidability of cer- 

 tain substances upon common, 22. 



Pendulum experiments, account of, 

 37, 81, 158, 410, 422, 424. 



Pendulum, on the apsidal motion of 

 a freely suspended, 134; formula 

 for calculating the apsidal motion of 

 a, 159 ; on the motion of a, afifected 

 by the earth's rotation, 275, 303, 

 376, 379, 412; on the vibration of 

 a free, in an oval differing little 

 from a straight line, 147 ; on the 

 deviation of the plane of vibration 

 of a, from the meridional and other 

 vertical planes, 150. 



Periclase, on the artificial production 

 of, 249. 



Peridote, on the artificial production 

 of, 247. 



Perowskite, on the artifical production 

 of, 249. 



Pewter coils, on the magnetism of, 

 230. 



Phillips (J.) on the deviation of the 

 plane of vibration of a pendulum 

 from the meridional and other ver- 

 tical planes, 150. 



Phillips (R.) on the magnetism of 

 pewter coils, 230. 



Phosphorus, suggestions for the pre- 

 paration of, 202. 



Photographic images, note on in- 

 stantaneous, 154. 



Photographic process, on a new, upon 

 glass, 505. 



Physics, symbolical, researches in, 

 149. 



Plants, on the growth of, in various 

 gases, 215. 



Pliicker (M.) on the magnetism of 

 gases, 503. 



Potter (Prof.) on the theory of sound, 

 162. 



Prism- stereoscopes, description of 

 several, 29. 



Probabilities, on certain questions re- 

 lating to the theory of, 55, 96. 



Propylamine, 462. 



Pyridine, on the preparation and pro- 

 perties of, 464. 



Pyrrol bases, observations on the, 470. 



Rankine (W. J. M.) on the theory of 

 sound, 36 ; on the mechanical 

 theory of heat, 61 ; on the centri- 

 fugal theory of elasticity, as applied 

 to gases and vapours, 509. 



Reversion-prism, remarks on the, 27. 



Robin (M.) on the application of rec- 



