^NDEX. 



Co'incer, Mr, mathematical tables con- 



ftrudled by, 62 

 Courfe of a body projefted from the moon 



to tke earth, method of inveftigaling, 



Crawford, 76 



Cronftedt, 207 



Cruickfhank, Mr. 4 



Cubes, a very extenfive table of, 62— 

 Eafy method of completing them, 150 



Cumming, Mr. 47 



Cuthbertfon, Mr. on a diftinguifliing pro- 

 perty between the galvanic and ekdtric 

 fluids, 97 — Refpefting galvanic and 

 eieiftrical experiments, 205 



D. 



Dalby, Mr. 18, 156 



Dalton, Mr. on the fuppofed chemical 

 affinity of common air, 145 — Illuftra- 

 t'ions of his theory of mixed gafss, 297 



Davy, Prof. 42, 147 



Decompofition of water, known to the 

 ancients, 28 



Deflagrations, galvanic, 97 



De la'Cepede, 59, 101 



Delambre, 13 



Delametherle, 213 



D'Elhuyar, 207 



De Marti, 43 



Demmenie, 142 



Denon'5 account of an ancient Egyptian 

 lock, 115 



Denfity of the air influences comhuftion, 

 147 



Defagulier's gaining and loling bucket, 37 



Deyeux, 76 



Dieman, 82 



Dilatation produced by eledlrlclty, 81 



Dific of difperfion, 202 



Draparnaud on the movement which cer- 

 tain fluids receive from the contact of 

 other fluids, 201 



Dry rot in Timber, obfervations and com- 

 munications on, 5 



Duckitt, 182 



Du Hamel, 224 

 Du Sejour,'*l3 



DyckhofF, 2 



E. 



Earth, the, on its figure, 12 — On the 

 courfe and velocity of bodies projeftad 

 from the moon to, 22— -Is probably an 

 ellipfoid, 159 



— - a new one, chemical examination of, 

 209 



Eccentricity of a place of obfervation, me- 

 thod of determining, 156 



Edridge, Mr. 278 



Eeles, 71 



Eledlricity, the pofitlve and negative are 

 not proved to be diftinft principles, 71 

 —Differences between it and heat, ?o— • 

 Afts by dilating bodies, 81 — Favours 

 oxidation by dimiHifhing the cohefion, 

 82 — Method of comparing it with gal- 

 vanifm, 176— Comparifon of its phe» 

 nomena with magnetifm, 184— New 

 experiment in proof of its identity with 

 galvanifm, 212 



Ellipfoid, the figure of the earth is probably 

 an, 159 



Emery, Mr. 49. 



Enamels of the ancients, memoir on the, 

 225 — Very cuiious and antique one of 

 a duck, 234 — Extremely minute one of 

 a bird, 235 



Engines, old, re-invented, 37 



E. P. on the ftate of icience among the 

 ancients, and on alchemical refearches> 

 27 



Ether, fluoric, procefs for obtaining, 143 



__ nitric, new method«of preparing, 143 



Eton's account of an ancient Egyptian lock, 



"^ 



Eudiometers, comparative examination of 



different, 41 

 Euler, 13 

 Expanfion of liquids correfponds with the 



fquare of their temperatures, T49 

 Experiments, galvanic, by Rittcr, 176— 



Van Marum's obfervations on, 212 



b 2 Fabroni, 



