402 INDEX. 



Dead Escapement, theory of, and on the reducing it to practice for 

 clocks with seconds and longer pendulums, 1-24 



Delvine, account of an arenaceo-calcareous substance found near, 

 79-84 ■ 



Dew, remarks on the deposition of, 35-41 



Diamond, fusion of, 160. Matrix of the Brazilian diamond, 178 



Dobereiner (M.), extraordinary experiment by, on the ignition of 

 platinum by a jet of hydrogen, 179. And on the action ofpla- 

 tina, on mixtures of oxygen, hydrogen, and other gases, 375, 

 376. Notice of his eudiometer, 374 



Dufour (Colonel), experiments of, on the tenacity of iron wire, 

 367, 368. Account of the iron wire bridge of suspension, con- 

 structed by him at Geneva, 369, 370 



Dumbness, case of, cured by electricity, 187-189 



Earth, acid, of Persia, experiments on, 179 



Earthquake, shock of, at sea, 184 



Eaton (Professor), observations of, on the boletus igniarius, 185 



Electrical Machine, horizontal plate, notice of, 171 



Electricity, on the employment of, in the treatment of calculous 

 cases, 185-187. Instance of dumbness cured by, 187-189 



Electro- Magnetism, observations on the electro-magnetic multi- 

 plier of Schweigger, and on some of its applications, 123-126. 

 Experiments on thermo-electric magnetism, 126-130. Table of 

 thermo-electrics, 171. Electro-magnetic effects of alkalies, 

 acids, and salts, 168-170. Notice of recent electro-magnetical 

 experiments by Oersted, Wollaston, and Sebech, 342-344. On 

 thermo-electric rotation, 372-373. Thermo-electric phenome- 

 non, with iron, 374 



Epidermis of plants, microscopical observations on, 391,392 



Eritrogene, experiments on, 174-176 



Escapement, see Dead Escapement 



Ether, experiments on, made by the simultaneous application of 

 heat and compression, 98, 99. Remarks thereon, 100 



Eudiometer, notice of a new one, 374 



Fallotvs (Rev. F.), account of some parhelia, seen at the Cape of 



Good Hope, 365, 366 

 Fat, change of, by water, heat, and pressure, 172 

 Faraday (M.), on change of musket balls in shapnell shells, 163. 



On action of gunpowder on lead, 163. On change of colour of 



plate glass by light, 164. Historical statement respecting the 



liquefaction of gases, 229-240 

 February 1324, astronomical phenomena for, 292-294 

 Finch (John, Esq.), description of a Roman camp by, at Mitchley, 



near Birmingham, 24-26 

 Fires, extinction of, in chimnies, 156 



