INDEX. 



<ft«««i*s eafH^enware, its defects, and a 



substitute proposed, 292 

 Quicksilver fro«en and beaten into a 



thin plate, 159 

 Quinceseed, mucilage of, experiments 



on, 31 



R. 



lUdish seed, experiments on the growth 



«f, 18 



Ramsay, Mr. W. on the solubility of 

 earths by means of sugar, 9 



R. B. letter from, containing an in- 

 quiry respecting a fact not hitherto 

 noticed in the way of discussion, 

 122 



Regnier, Mr. his instrument for proving 

 the strength of gunpowder, described, 

 €$? 



Repulsion, see Attraction. 



Ridges of shells in America, 158 



E},ffault, M. 183 



Roard, M. on Roman alum, 275 



Rt>biquet, M. bis experiments on the 

 action of sulphur on charcoal, 50 



Rome's theory of the re;,istance of fluids, 

 72 



Rotation of crops, a new, 273 



S. 

 Sacro Catino of Genoa, described, 97 

 Satnbcl, mines of, 51 

 Salmon, Mr. description and manner of 

 using his geometrical plotting qua- 

 drant, level, and calculator, for the 

 use of navigation, and land-survey- 

 ing, ascertaining inaccessible dis- 

 tances, and demonstrating and de- 

 termining various problems in geo- 

 metry and trigonometry, 219 

 Salts, barytic, decomposed by nitric, 66 

 Saussure, M. Von, his experiment on 

 the uses of carbonic acid to vegeta- 

 tion, 22, 24— His tour to the Alps, 

 296 

 Schaub, '^"^ on the waters of Nenndorf, 



in Hesse, 41 

 Scheele, M. 2o2— On combinations of 

 sulphur and hydrogen, 45— Notice 

 isi his unsuccessful attempts to trans- 



form alcohol into ether, 63— Cor* 

 rection of a mistake of his, respect- 

 ing muriatic ether, 184 

 Schlumberger, M. 277 

 Schreiber, M. on the natural history ©f 



the Proteus Anguinis, 93 

 Scientiac News, 70, 55, 320, 351 

 Sea kale, cultivation of, 100 

 Sediment of water, arrangement of* 



122 

 Seeds most difficult to germinate, suc- 

 ceed in Moss, 15 

 Sennebier, on the decomposition and 

 absorption of atmospheric carbonic 

 acid by vegetables, 22, 23 

 Shell's extensive ridges of, in America* 



158 

 Siauve, M. 91 



Silver, detonating compoimd of , 1 40 

 Siphon, Mr. Argand's, described, 61 

 Skins, machine for splitting, 348 

 Smelting, furnace at Fahlun, in Swe- 

 den, 202 

 Smith, Dr on the cultivation of sea 



kale, 100 

 Smut in wheat, its causes and method 



of preservation, 263 

 Soaps and plasters, 231 

 Solder of leaden vessels. Oxidation of, 



115 

 Solubility of earths, by means of su- 

 gar, 9 

 Spark, electric, its various appear- 

 ances, 123 

 Sparry, iron ores, 315 

 Starch, mucilage of, examined, 23, 37 

 Steel, annealed, considerations on tha 



colours, of, 134 

 Steinacher, M. on the distilled water of 



common borage, 343 

 Stoneware proposed as a substitute for 



all glazed earthenware, 293 

 Stott, Mr. account of his engine for 



splitting sheep skins, 348 

 Strawberries, their varieties, 197 

 Sugar, Experiments on, 10 

 Sugar, mucilage of, examination of its 

 properties, 34 



2 Sulphuf 



