INDEX. 



377 



Protherite, 180 



Pyrolusite, a new mineral, 304 



Pyrometer for measuring high tempera- 

 tures, 168 



Radiation, terrestrial, 172 



Rogers, Mr A. on the construction of 

 large achromatics, 126 



Rome, on the materials and styles of 

 building in the city of, 30 



Rust, on protection against it, 336 



Saturn's ring, on a phenomenon in, 353 



Schiller spar, diatomous, 180 



Scott, D. Esq., on the cave of Boobon, 54 

 — on the brood of boa constrictors, 153 



Sea, on the pressure of on empty bottles, 

 366 



Selenious acid, decomposition of, by me- 

 tals, 357 



Serpentine, analysis of several varieties 

 of, 174 



Shipbuilding, on the employment of 

 equation* of conditions in, 294 — on the 

 cultivation of the science of, 298 



Soobathoo, on the climate and agriculture 

 of, 233 



Specula, apparatus for grinding and po- 

 lishing them, 213 



St-Hilaire M. Geoffroy, on the Trochilos 

 and crocodile, 68 



Stars, on double and triple ones, 79, 90 



Stars, on remarkable double ones in the 

 S. hemisphere, 353 — variable, ib. 



Steam, on the quantities of, condensed by 

 different vessels, 238 



Steam engine at Huel Towan, on its per- 

 formance, 159 



Steatite, on its use for diminishing friction 

 in machinery, 166 



Stewart, Mr Dugald, on ventriloquism, 

 241 



Storms indicated by the vibration of glass 

 vessels, 172 



Struve, Professor, on double and triple 

 stars, 79 



Sun, spots on his surface in May, 169 



Talc, analysis of, 177 



Telescope, reflecting, account of a new 

 one, 25 



Thermometer, on a self-registering one, 

 113, 300 



Thomson, Dr, on a new combustible gas, 

 346 



Transactions of the Royal Society of Edin- 

 burgh, analysis of, vol. xi. part i., 346 



Trevelyan, W. C. Esq. on the Winch 

 Bridge, 352 — on Epilobium Alpinum, 

 366 



Turner, Dr, his analysis of two hot mi- 

 neral springs, 95 — his analysis of na- 

 tive iron from Atacama, 262 — his 

 analysis of the ores of manganese, 349 



Twining, Mr W., on single vision and 

 the union of the optic nerves, 143 



Uric acid in the urine of the lion and ti- 

 ger, 356 



Variation of the magnetic needle, new 

 table of, 26 



Vegetable physiology, discoveries in, by 

 M. Dutrochet, 103, 318 



Ventriloquism, observations on, 241 



Ventriloquists, on the performances of 

 different ones, 252 



Vesuvian, minerals, &c. described, 202 



Vesuvius, account of, 191 



Vision, on single, with two eyes, 143 



Water, on the colour of, 325 



Waterspout at Edinburgh, 131 — in the 

 Indian Ocean, 171 



Winch bridge, notice of the, 852 



Wind, its influence on the barometer, 77 



Zinc, pure oxide of, how to prepare, 359 

 — biseleniuret of, 365 



DESCRIPTION OF PLATES IN VOL. IX. 



PLATE I. 



PLATE II. 



Fig. 1 — 3, Lord Oxmantown's New Reflecting Telescope, p. 26. 



Fig 4 — 9, Represent the Styles of Building used in ancient Rome, 

 p. 32. 



Fig. 10, Plan of the Cave of Boobon, p. 55. 



Fig. 1 — 5, Represent the Forms of the new Mineral called Botry- 

 ogene, p. 49. 



Fig. 6 — 9, Represent Mr King's New Self- Registering Thermo- 

 meter, p. 114. 



Figs. 10, 11, Represent a Waterspout seen near Edinburgh, p. 131. 



Fig. 12, Represents a Steam-Boiler, p. 159. 



Fig. 13, Represents Mr Forster's Anemoscope, p. 1 67. 



