INDEX. 



Tine stove, improvement in the con- 

 struction of, 111 



Pinus balsamea, description of, 208 



Planetary system, question relative to 

 its stabUity, 72, 75 



Plans, instrument for reducing, or en- 

 larging, 179 



Plants interior structure of, and growth 

 of their buds, 1— Cause of death in, 

 ' 6— Natural affinity of, 11— Source of 

 their nutriment, 236 



Playfair, professor, his illustration of the 

 Huttonian theory of volcanoes, 151 



Pneumatics, experiments in, 107 



Poisons, experiments on, 314 



Poisson, M. on the variations of the 

 elements, of the planets, and on the 

 rotation of the earth, 72 



Poiteau, M» on grasses, 258 



Potash, hyperojdmuriate of, its forma- 

 tion, 126 



Potassium and sodium, various experi- 

 ments on, 35, 62, 113, 132, 223 



Poyfire De Cer6, M. on the mode of 

 ■washing wool, 315 



Price, Mr. J. T. on the use of iron 

 pipes for conveying water, and mode 

 of seeming their joints, 135 



Prize questions, 316 



Prwiy, M. De, on barometrical meji- 

 surements of inconsiderable heights, 

 77— On the invention of a new en- 

 gine, 175 



Proven9al, M. on respiraAion^ 315 



R. 



Rain, illustration of Mr. Howard^s theo- 

 ry of, 142 



Rain table for the year 1810, 134 



Ramond, M. his coefficient for barome- 

 trical measurements, too great foe in- 

 considerable heights, 77 



Reaping hook improved, 171 



Regnier, M. his rheumameter, to esti- 

 mate and compare the velocity of the 

 current of rivers, 68 



Repulsion, *ee Attraction 



Respiration, experiments on» 2^12, 366 



Rheumameter,description and U9e of,6* 



Richerand, Professor, on the cofntrac* 

 tion of the muscles, 319 



Risseau, M. on Ichthyology, • 240. 



Ritter, M. on the electrical decompop 

 sition of potash and soda, 116 



Rivers, instrument for measuring the 

 velocity and force of, 68 



Rockets, military, their motion in non- 

 resisting and resisting mediums, 24 1 



Roofs of flag-stones, method of mak- 

 ing, 81 



Rumford, Count, distribution of hi* 

 prize medals, 319 



S. 



Sage, M. 79— On the best process for 

 making solid inortar, or stucco, 181— 

 On a substitute for emery, 155 — On 

 some petrified fruits^ 158 — On the 

 means of remedying the stings of in- 

 sect^ and fishes, 314 

 St. Amand, M. his claim to the inven- 

 tion of the economical process for 

 evaporation, 138 

 Sap of trees, circulation of, 5, It 

 Saussure, M. on the mineralogy of 



Mount Cenis, 311 

 Sauviac, M. on artificial turquoises, 154 

 Scaffolding for working on a high roo^ 



construction of, 83 

 Scheele on the bleaching powers of the- 



oximuriatic gas, 234 

 Scientific news, 72^, 151, 236, 312 

 Scotch firs, natural history of, 205 

 Screw-zuljusting plough, 298 

 Ship on a new construction, 320 

 Ship's boat, method of converting oafr 



into a life boat, 86 

 Singer, G. J. Esq. on the igniting, or 

 ■wire-melting power of the voltaic, 

 battery, as proportioned to the num- 

 ber of plates eDftpIoyed, 29 

 Smell, sense of, in fishes, question on 



the existence of, 344 

 Smith, Mr. B. his method of raising a 

 loaded cart, when the shaft horse i» 

 fallen, 326 



Smitb» 



