INDEX. 



Prussiates, facts towards a history of, 



89, 249 

 Pumice-stone, analysis of, 194 

 Pyreolophorus, 367 



R. 



Reagents for muriatic, carbonic, and 

 sulphuric acids, and for ammonia, 360 



Redowski, Mr. his projected scientific 

 expedition, 232 



Refraction, horizontal, 153 



Reid, Mr. James, 178 



Repulsion, see Attraction. 



Respiration, 1 43 



Reuter, Mr. his invention of printing 

 from autographs of stone, 231 



Riehfer's process for extracting and 

 purifying gallic acid compared -with 

 the inventions of other chemists, 

 58,60, 71 



Ritter, M. on muriatic acid and soda 

 formed by galvanism, 2-31 



Rockets discharged by means of elec- 

 tricity, 232 



Rocks, method of blasting with sand, 

 adopted in France, 227 



Roxburgh, Dr. his table of the growth 

 of trees in the Botanic Garden at 

 Calcutta, 110 

 R. T. on the art of making copies of 



written papers by pressure, 178 

 Rumford, Count, description of his 

 new boiler, constructed with a view 

 to the saving of fuel, 5— His experi- 

 ment on the Use of the heat of steam 

 in place of that of an open fire, in the 

 making of soap, 10. — His adherence 

 to the old theory of heat, 511 



Saline bodies, their habitudes with re- 

 gard to electricity, 1 1 



Salmon, Mr. R. on pruning fir-trees 

 157 



j>aussure, on the heterogeneous particles 

 contained in air, 275 



Saw, a curvilinear, 334 



Say, M 194 



Scaper, ..nts, new, for time-keepers, 363 



Scheele's discovery of the means of 

 separating the gallic acid, 58, 71.— • 

 On prussiates, 106, 109, ,249 — On 

 acetic aether, 219— His mistake re- 

 spelling oxigenation, 274 



Schul, J. H. Von, 114 



Scientific News, for May, 88 — June, 

 151— July, 227— August, 306, 365 



Scientific voyage, 262 



Sea-water, analysis of, 72 



Segner, M. on capillary attraction, 174 



Seguin, M. his method of freeing alum 

 from iron, 311 



Skrimshire, Mr. W. jun. on the ha- 

 bitudes of saline bodies, with regard 

 to electricity, 12 



Soap-buihngf improvement in, 10 



Soehne, Mr. 183 



Solar motion, ^66 



Solander, Dr. on the influence of ex- 

 treme heat on the animal con- 

 stitution, 145 



Sound, experiments on, 211 



Sphex, interesting economy of the, 

 302 



Steam, boiler for generating, 5— Ex- 

 periment on the use of, in the ma- 

 nufacture of soap, 10 



Stereometer, 194 



Stove for heating and drying, #63 



Sulphuric acid, theory of the fabrica- 

 tion of, 41 



Sulphurous acid, remarkable properties 

 of, 303 



Swimming Society in Denmark, 23^ 



T. 



Talaker, Mr. "William, 189 



sTatum, Mr. John, on the increase of 

 temperature produced by the galva- 

 nic action, 149 



Telescope, Binocular, 201 



Temperature, increase of by galvanism, 



149 



Tempest 



I 



