INDEX, 



D. 



Palton, Mr. bis chemical theory exa- 

 mined, particularly as to what relates 

 to potassium and sodium, C7— Mr. 

 D's reply, 157— Animadversions on 

 his letter, 219— Examination of his 

 hypothesis of the manner in which 

 bodies combine with each other, 280 

 —Remarks on the terms employed 

 ' in his treatise, 281— His chemical 

 synthesis, 282— Objections to his 

 doctrine, 283 



^ Letter of inquiry from, on the 



meaning of the term pariicie, and 

 some other words and phrases used 

 in modern chemistry, 81— Answered 



'239 . . 



^ on the nature of oximunatic 



acid, 205. _ 



Parso, M. on the oxides of iron, 

 and their increased weight by the 

 action of fire, 188 

 Pavy, H. E q- conclusion of his re- 

 searches on the oximuriatic acid, its 

 nature and combinations; and on 

 the elements of the muriatic acid ; 

 with some experiments on sulphur 

 and phosphorus, '31-Remarks on 

 his theory of the nature of muriatic 

 ana oximuriatic ^acids, 152— Re- 

 ply, 193-r-Farther observations, 369— 

 His method of obtaining sodium and 

 poussium compared with the process 

 recommended by Mr. Dalton, 69, 

 219 3(j2--Unceriainties in his calcu- 

 lation, 243— His theory of oximu- 

 riatic acid applied to the hyperoxi- 

 muriateof potash, 310 

 Desormes, M- his description of an 

 economical process for evaporation, 

 invented by the late Mr. J. Monf 

 aolfier, 373 

 pe Luc, J. A. Esq. his experiments 

 ' concerning the electric machine; 

 showing the electric effects of friction 

 l>etween bodies, 1-S'ee Electricity- 

 Singular instance of connection be- 

 . wee^ the acUon of his elecuic co- 



lumn and the state of the atmosphere, 

 293 



Don, river, analysis of a black sand 

 found on its shores, 19 — See Sand 



Drosera, British Species of, not well as- 

 certained, 105— Doubts of Linnajus, 

 Scopoli, and Haller, whether it were 

 a species or a variety, 103— Descrip- 

 tion of the plant and flower, 106— 

 Specific characters, 107' 



Dumeril, M. on the mechanism of re- 

 spiration in fishes, 350 



E. 



Edinburgh Royal Society, 77, 238 

 Electricity— Invention of the electric 

 machine, 1— Two kinds of electii- 

 city, 2 — This doctrine erroneous, 12 

 —Dr. Franklin's theory, 2— Objec- 

 tions removed by Volta, e7>.— Experi- 

 ments on the effects of friction, 3, 7 

 —Conductors and nonconductors, 3 

 —Mr. Cavallo on negative and posi- 

 tive properties in different bodies, 4 

 —Description of Mr. De Luc's ap- 

 paratus for proving the similarity be- 

 tween the electric machine and pile, 

 5— Experiments, 7— Small quantity 

 of the electric fluid acting in the pile, 

 7— Proofs that only one fluid circu- 

 lates, S— Effets of amalgam on com- 

 mon rubbers, i6.— General effect of 

 friction exemplified with two pieces 

 of ribband, and with glass, 9— Fric- 

 tion between glass and sealing-wax, 

 lO'-Between glass and India rubber, 

 and brass and sealing-wax, 11— Dis- 

 tinction of electrics per se improper, 

 11— Friction between seaUng-'wax 

 and India rubber, 12— Proof of a 

 I body becoming positive or negative, 

 , le— Friction disturbs the equilibrium 

 ©f the electric fluid, and then be- 

 comes manifest, ii.— Kemarkable in- 

 stance of coincidence between the 

 state of the atmosphere and the 

 action of Mr. De Luc's electric co- 



Umn, 293 



Cq% Electricity, 



