INDEX. 



471 



Ledererite, on, 317, 392. 

 Light, influence of successive impulses 

 upon the retina, 241 ; polarization 

 of, 312, 313 ; connexion between re- 

 fracted and diffracted, 441. 



Lightning, Heat, on the cause of, 340. 



Limestone, freshwater, in the coal-beds 

 near Shrewsbury, 158. 



Linnaean Society, 52, 150, 309, 381, 

 454. 



Lion, on a maneless species of, 378 ; 

 on the cranium of the, 454. 



Lister (J. J.) on the structure and 

 functions of Polypi and Ascidiae, 

 365. 



Lubbock (J. W.), " Mathematical 

 Tracts," review of, 218; on cask- 

 gaging, 326 ; on the tides, 362. 



Lyell (C.) on the geology of Cerdagne 

 in the Pyrenees, 376. 



MacLeay (W. S.) on the genera Urania 

 and Myga/e, 460. 



Magnet, detonation of gases by the 

 spark of, 104. 



Magnetic needle, mode of determining 

 the dip of, 232. 



Magnetism, terrestrial, instrument for 

 ascertaining various properties of, 81. 



Magneto-electric induction, recent dis- 

 coveries in, 11. 



Malic acid, artificial, 74. 



Marylebone Literary and Scientific In- 

 stitution, 151. 



May-flies, description of some non- 

 descript species of, 120, 212. 



Metals, vibration of heated, 15, 182. 



Meteorological phenomena, notice of, 

 103 ; cause of, 233. 



Meteorological table : — for November, 

 80; December, 160; Ja.iuary, 240; 

 February, 320 ; March, 400 ; April, 

 468. 



Mitchell (Dr.) on certain strata in 

 Buckinghamshire, 148; on the Re- 

 culver cliff, 149. 



Monkey, peculiar species of, 61. 



Moon, on the theory of the, 218, 220. 



Morphia, in poppy seeds, 236. 



Moseley's (Prof.) principle of least 

 pressure, remarks on, 89, 271; his 

 replies to Mr. Earnshaw, 194, 420, 



Mosses, on, 254. 



Mountain chains of Europe and Asia, 

 on the, 1. 



Murchison ( II. I.) on freshwater lime- 

 stone near Shrewsbury, 159; OH tin.' 

 old red sandstone of parts of Wales, 

 Sec, 22S ; on the transition rocks of 



Shropshire, &c, 370 ; 450, 



Mushrooms, on, 258. 



Naples, influence of the climate of on 



vegetation, 271. 



Nebula, Sir J. Herschel's observations 

 of, 125. 



Newman (E.) on the metamorphosis 

 of insects, 381. 



Nicol's (Mr.) polarizing eye-piece, on, 

 289. 



Nimmo (A.), notice of the late, 446. 



Nixon (J.) on the trigonometrical 

 height of Ingleborough, 163. 



North magnetic pole, Commander Ross 

 on the position of, 222. 



Nux vomica, new acid in, 153. 



Oil of bitter almonds, composition of, 

 70. 



Opium, new substance in, 77. 



Optical illusion, on a new instrument 

 of, 36. 



Optics, facts relating to the science of, 

 112, 289. 



Ornithorhynclius, on the abdominal 

 glands of, 54. 



Osmium, its separation from iridium, 

 155. 



Oude, royal observatory of, 158. 



Owen (R.) on the mammary glands of 

 Omithorhynchus, reply to, 54 ; on 

 the anatomy of the Terebrutula, &c, 

 302 ; on the kangaroo, 304 ; on the 

 generation of the kangaroo, 438 ; on 

 the crania of the lion and tiger, 454; 

 on the anatomy of the Touraco, 456. 



Oxalhydric acid, 74. 



Pendulum, Capt. Forster's experi- 

 ments on the, 230. 



Persian Gulf, on the former extent of, 

 107. 



Philip (Dr. W.) on death, 360. 



Phillips (J.) on the ancient forests of 

 Holderness, 282. 



Phillips (It.) on chemical symbols, 246; 

 replies to, 41, 106, 402, 464. 



Philosophical Society of Cambridge, 66. 



Placunanomia, on the genus, 455. 



Plants, on the external structure of im- 

 perfect, 252. 



Platina, found in galena, 319. 



Polypi, on the structure and functions 

 of, 365. 



Pond (J.) on the new zenith telescope 

 at the Royal Observatory, 3<>7. 



Potash, pcrmanganesiate of, 155. 



Potassium, experiments with, 318. 



Potter (R.) on the reflection of light 

 by glass of antimony, 6. 



Pressure, on the principle of the Kit, 



89, 194, 271, •120. 



Prideaux (.1. / on Mr. Phillips'* re- 

 marks 011 chemical symbols, 1 1 , In I. 



PrtlSsic acid, test for, 151. 



I'liina, notes on the. 299. 



Pyrenees, on | Ik .liwatcr loiin.ition in 

 'tin. 



