INDEX. 



471 



tloii of Fergusonite, manganesian 

 epidote or pistacite, and pyrophillite, 

 232 ; on varvicite, 284 ; kermes, 

 386 ; carbonate of lime and soda, 389 ; 

 on a crystalline sub'^tance from the 

 zinc-foundry at Filisur, 401. 

 Mitscherlich (M.), Mr. Gilbert's ad- 

 dress to, on delivering the Royal 

 Society's medal, 45. 

 IMoUusca, anatomy of, 380 ; M. Cuvier 



on, 380. 

 Moon's disc, on the copper-coloured 



light reflected from, 66. 

 Murchison (R. I.) on the tertiary de- 

 posits of the Vale of Gosau, 48, 50 ; 

 on the tertiary deposits of Lower 

 Styria, 358 ; on the fossil fox of 

 CEningen, 207. 

 Nitrate of lead, on, 277. 

 Noton's (B.) register of the pluviome- 

 ter at Bombay in 1828, 14. 

 Obituary;— M. N. H. Abel, 77; M. 



Vauquelin, 78. 

 Occultations of Aldebaran, 66, 223 ; 

 lunar occultations of fixed stars for 

 May and June, 390. 

 Oolite series of England and France, 

 distribution of organic remains in, 

 81, 202, 250, 334. 

 Optical experiments, 281. 

 Organic remains, on, 81, 202, 250, 306, 



312, 334. 

 Organization, unity of, 380, 440. 

 Ornithology -.-new species of wild swan, 

 146 ; specific characters of Cygnus 

 Bewickii and C. Ferus, 194. 

 Paddle-wheel, new, 96, 408. 

 Paper, manufacture of, from Ulva ma- 

 rina, 236. 

 Patent inventions, law of, 67, 152. 

 Patents, new. 76, 157, 237, 397, 462. 

 Pattinson (H. L. ) on the fossil trees 



in Derwent lead mine, 185. 

 Perchloride of mercury, a new salt of, 



129, 317. 

 Petrophila, natural history of, 206. 

 Phillips (J.) on the geology of Havre, 



195. 

 Phillips (R.) on anew salt of perchlo- 

 ride of mercury, 129, 317 ; remarks 

 on the electrical formation of crys- 

 tallized sulpliurot, 227. 

 Phosplioric acid, on, 276. 

 I'hosplioruf, and liydrogen. Dr. Henry 



on the compounds of, 229. 

 Pistacite, examination of, 232. 

 Plants. — on artificial and natural ar- 

 rangements of, 15, 97, 180; new suc- 

 culent, 106 ; on the plant intended 

 by the shamrock of Ireland, 289. 

 Flatina and gold, Russian, 59. 

 Potash, chromate of, detection of adul- 

 teration in, CI. 



Prideaux (J.) on chloride of barium 



and nitrate of lead, 276. 

 Prism, experiments on light and sha- 

 dow by tlie, 65. 

 Pyrophillite, a new mineral, examina- 

 tion of, 232. 

 Ramus (Peter), method of, 435. 

 R. J. M. on prize chronometers at 



Greenwich, 134. 

 Reade (Dr. J.) on light and shadow, 



65. 

 Refraction, double, in the molecules of 



bodies, 356. 

 Reviews of books : — J. Challis on the 

 theory of the small vibratory motions 

 of elastic fluids, 136. 

 Roads, on the draught of carriages on, 



286. 

 Robinson (Dr.) on the longitude of 



the Armagh Observatory, 225. 

 Rocks: — European, on Mr. De la 

 Beche's classification of, 189; sali- 

 ferous,inthe Stateof New York, 198, 

 Richardson (Mr.), Mr. South's address 

 on delivering the Astronomical So- 

 ciety's medal to, 373. 

 Ritchie (W.) on the electric and che- 

 mical theories of galvanism, remarks 

 on, 61. 

 Roscoe (W.) on artificial and natural 

 arrangements of plants, 15,97, ISO. 

 Royal Academy of Sciences of Paris, 



55, 376. 

 Royal Geological Society of Cornwall, 



147. 

 Royal Institutionof GreatBritain, 211, 



315. 

 Royal Society, 33, 139, 206, 287, 353, 

 449 ; on an alleged inaccuracy in the 

 minutes, 446. 

 Rumker(C.) on the elements of the 



Comet in Pegasus, 446. 

 Salt, new, of perchloride of mercury, 



129, 317. 

 Schweigger-Seidel (Dr.) on the blue 

 colouring-matter of lapis lazuli, and 

 on artificial ultramarine, 244. 

 Schmidt (Dr. E.) on the dimensions of 



the earth, 409. 

 Scrope (G. P. )on the excavating power 

 of rivers, 210; Prof. Sedgwick's 

 opinion on, 293. 

 Sedgwick (Prof.) on the tertiary de- 

 posits of the Vale of Gosau, 48, .TO; 

 on tlie tertiary deposits of Lower 

 iStyria, 358 ; address on the anniver- 

 sary of the Geological Society, 289. 

 .Shamrock of Ireland, on the plant in- 

 tended l)y the, 289. 

 Sharpe (.S. ), account of some optical 



experiments, 281. 

 Sharpe (D.), on a new species of Ich- 

 thyosaurus, 458. 



