INDEX. 



Copper, pyrltous, account of the me- 

 tallurgic treatment of in the depart- 

 ment of the Rhone, 51 

 Copper, heated, displays piismatic lints, 



135 

 Copper pyrites, effects of heat on, 20 1 

 Copper, desiilphu ration of, 208 

 tovereti ways of the ancients, 243 

 €rambe Maritimo, pr sea kale, cultiva- 

 tion of, 100 

 Crops, rotation of, a n^w plan for, 273 

 Cruickshauk on the formation of water, 



27 

 •urtis, Mr. his improvement in the 

 culture of sea kale, 100 

 D. 

 D'Arcet, M. on the decomposition of 

 acetate of barytes, by means of soda, 

 66 

 Dalton, Mr. 315 

 DaviUiers, M.284 



Davy, Humphry, Esq. on some chemi- 

 cal agencies of electricity, 32 1 

 Danbuisson, M. his observations on 

 subterranean heat, made in the mines 

 of Poullaouen and Huelgout, in Brit- 

 tany, 148 

 Death from cold, investigation of, 2!j4i 

 becroissilles, M. 276 

 Delametherie, M. on the oxidation of 

 the solder of leaden vessels used in 

 wash-houses, 115— Letter to, on the 

 production of muriatic acid by givlva- 

 nism, 153 

 Degeer, 218 

 Delft earthenware, its defects, and a 



substitute proposed, 292 

 Densidoif, M. Procopius, his method 



of germinating seeds, 15 

 Descotils, M. his experiments on cu- 

 preous pyrites, 51— His account of a 

 fulminating compound of s.lver, 140 

 *— On spar, 315 

 Desormes, on carburetted sulphur, 43 

 Desulphuration of metals, 197 

 Detonating silver, 140 

 Deyeux, M. 182 •—On the reciprocal 

 action of r^^lphur and chaiceal, 43 



Diamonds contain hydrogen, 27 

 Disoxiding principle in distilled waters, 



343 

 Donovan, Mr. his musaum, 121 

 Dubuat, M. his hydraulic theorertt 



transformed, 309 

 Duck's wing, colours of, how produced, 



138 

 Ducloseau, M. on ascertaining the 



quality of window glass, 143 

 Dnhamel, 15 



Duncan, Dr. his opinion on the preci- 

 pitation of tragacanth by sulphate of 



copper, controverted, 31 

 Du Pont, Mr. De Nemours, on a kind 



of death that may be presumed to be 



only apparent^ 254 

 Diitens, M. a mistake of respecting a 



stone, which he describes as a varietf 



of the Peruvian emerald, 

 Dyes, experiments with, 2^2 



E. 



Ear-cockie in wheat, 265 



Ear trumpets, theory of, 310 



Earthenware, history of, 291— Fact for 

 proving the quality of its glaze, 294 



Earth, solubility of, by means of sugar, 

 9 



Eckeberg, Mr. his comparison of bary- 

 tes, yttria, and magnesia, 77 



Eels, remarkable account of a migra- 

 tion of, 236 



Eilsen, baths of, 42 



Electric spark, query respecting, 123 



Electricity, 271, 321 



Electrometer, a portable, described, 

 270 



Emeralds, the largest known, 99 



Encrinites, British nondescript, 121 



Ether, phosphoric, apparatus for making, 

 63 



Ether, nitrous, report on a paper on, 

 144 



Ether, muriatic, memoir on, 176 — Ap- 

 paratus for obtaining, described^ ib. 



Evaporation, 9 



Expansion of air by heat, 260 



b2 Wi 



