472 



INDEX. 



Quina, Mr. R. Phillips on ascertaining 

 the purity of, 111. 



Rain-gauge, Mr. Bevan's remarks on 

 Mr. J. Taylor's, 29. 



Rain, red, 463. 



Riddle (E.) on the occultation of /S 

 Scorpii, Sept. 25, 1827. 



Rifle, a percussion, Lieut-Col. Miller 

 on, 277. 



Robotham's (J.) geometrical problem, 

 234. 



Roget (Dr.) on an apparent violation 

 of the law of continuity, 118, 203. 



Salivary concretion, analysis of, 146. 



Sea water, quantity of bromine in, 145. 



Selenium, bromide of, 147. 



Serullas (M.) on bromide of selenium, 

 147. 



Sepiae, Mr. Slight on certain habitudes 

 of, 153. 



Shell, a percussion, Lieut. -Col. Miller 

 on, 358. 



Slight (H.) on certain habitudes of 

 sepiae, 153. 



Smith, Sir J. E., 291, 307, 374, 391. 



Societies learned: Royal Society, 46, 

 128, 370, 436; Linnaean Society, 130, 

 223, 290, 374, 440; Geological So- 

 ciety, 132, 225, 291, 441; Astrono- 

 mical Society, 64, 136, 227, 377, 

 451 ; Zoological Society, 68 ; Royal 

 Geological Society of Cornwall, 138 ; 

 Royal Academy of Sciences of Pa- 

 ris, 139, 305; Royal Institution of 

 Great Britain, 229, 304, 391, 456; 

 London Institution, 154. 



Soda, new borate of, 146. 



Solids, regular or platonic, Mr. Davies 

 Gilbert on, 161. 



Solly, Mr. S. on trap-rocks, 458. 



Sound, Dr. Weber on the interference 

 of, 342. 



Starch, common and roasted, analysis 

 of, 150. 



Steam, new phenomena of, 74. 



Steam-engine, on, 40, 219. 



Stromeyer, Prof., on the separation of 

 manganese from lime and magnesia, 

 462. 



Subsidence of the German Ocean, 188. 



Substances, simple alimentary, Dr. 

 Prout on, 31, 98. 



Succulent plants, new, 183. 



Sulphur and phosphorus, fluidity of, 

 144; effects of heat upon snlphur, 

 152. 



Surfaces, curve, Prof. Gauss on, 331. 



Tautolite, a new mineral, 398. 



Teschemacher (E. F.) on the crystal- 

 line form of some salts, 27. 



Thermal waters of the Alps, Mr. 

 Bakewell on, 14. 



Thermometers, new method of mount- 

 ing, Mr. Mageough on, 365. 



Thomson (Dr.) on the decomposition 

 of sulphate of zinc and chromate of 

 potash, 81. 



Tourmalines, analyses of, 460. 



Trap-rocks, 458. 



Tredgold (T.) on the steam-engine, 

 219 ; new theory of the resistance of 

 fluids, 249. 



Ultramarine, manufacture of, 232. 



Vapour, new phaenomena of, 74. 



Vegetable products, analysis of some, 

 150. 



Vision, single and erect, on the causes 

 of, 406. 



Wackenroder's (Dr. H.) examination 

 of diopside, 349. 



Walker (R.) on the artificial produc- 

 tion of cold, 401. 



Water and bromine, power of, in con- 

 ducting electricity, 151. 



Water-spouts, Mr. Main on, U4« 



Weber (Dr. W.) on Savart's experi- 

 ments on the motions of membranes, 

 336 ; on the interference of sound, 

 342. 



Yorkshire, heights of the principal beds 

 of Ingleborough Hill and Moughton 

 Fell in, 13 ; heights of the hills in the 

 vicinity of Dent, Hawes, and Sed- 

 bergh in, 82, 189. 



Younge (R-) on Desorme's experi- 

 ments on currents of air, 282. 



Zinc, sulphate of, and chromate of 

 potash, Dr. Thomson on the decora- 

 position of, 81. 



Zoology, 46, 68, 117. 



END OF THE THIRD VOLUME. 



LONDON: 



TRINTKR BT RICHARD TAYLOR, RED WON COURT, FLEET STREET. 



1828. 



