72 INDEX. 



Electro-magnetism, a simple method of exhibiting the deflection of 



the magnetic needle by, xx. 400 

 Electrometer, atmospherical, account of, ii. 249 



■ new, notice of, xi. 208 



■ — for minerals, xiii. 432 



; of Dr. Hare, notice of, xvii. 377 



Elemi resin, analysis of, xiv. 235 



Elephant, death of, x. 203 



Elevation above the level of the sea, effects of, on the geography 



of plants in France, iv. 176. Influence of, on temperature, 



178. Its action upon light, 187. Of height, as affecting 



moisture, 189. Its agency in the rarefaction of air, 191. 

 Elias, an alchymistical artist, notice of, ix. 233 

 Elimination, note respecting, iii. 355 

 Elk (fossil), of Ireland, description of, xix. 269 

 Elmes (Mr.), observations of, on the construction of prisons, 



V. 190 

 Embossing on wood, new method of, xix. 134 

 Emery, mode of preparing, xix. 135 



Emetic tartar, a remedy for comsumption of the lungs, vi. 172 

 Encke's triennial comet, re-discovery of, xv. 132. xvii. 



(86 Olb.) 96 

 Engine boilers, observations on the feeding of, xv. 137 

 England, proofs of the increasing population of, v. 305 

 Englefield (Sir H.), directions for using the barometer of, v, 



229 

 Engrafting of trees, process for, viii. 154 

 Engraving on steel, new mode of, described, ix. 125 

 Epidermis of plants, microsopical observations on, xvi. 391 

 Epilepsy, on the use of nitrate of silver in, xii. 189. 

 Equation of comets, on the determination of, xii. 137 

 Equisetacea, observations on the structure and fructification of, 



vi. 20 

 Equivalents, table of, for converting hours, minutes, and seconds 



into space, xiii. 394 ; and for converting degrees, minutes, and 



seconds into time, 395 

 Ereri (Capuchin mission of), notice of, ix. 19 



