INDEX. 



AcCUM, Mr. letter from him refpect- 

 ing a fuppofed omiflioa in his Practical 

 Chemiftry, 2.14 



Acid, benzoic, different methods of ob- 

 taining, S7. — Properties of, 88 



, lactic, a memoir on the, 141 — 257. 



Chemical examination of, 261 



lignic, is found in peat, 213 



nitric, on the direct production of, 



105—214 



Aeroftatic voyage, account of an, to exa- 

 mine the magnetifm of the air, &c. 27S 



Acricola, 273 



Air taken at great elevations, analyfis of, 

 285 



— pump, defcription of an improved, 201 

 Alcaiie;, action of, on refins, 245 

 Alcohol, action of, on fandarach, 246.— 



On maftich, 247 

 Aletc* on the reflection of cold, and in- 

 vention of the telefcope, 92 — 145 



Animal bodies, convcifion of, into foflils, 

 i8r 



■ ■ oil, queftions refpecting the con- 



^erfion of animal remains into, 303 



Anftey, Mr. on the ufe of peat-alhes and 

 duft as manuie, 243 



Apparatus, improvement in the con'truc- 

 tion of Woulfe's, 180 



Allres of peat, on their ufe as manure, 

 208 — Probably occafion the fpontaneous 

 growth of clover, 213 



« of pit-coal, a good manure for grafs, 



239 



• of wood, contain a peculiar earth, 240 



Aftronomy, ancient Egyptian hierogly- 

 phics fuppofed to relate to, 4 



Acmofphere, its compofition every where 

 the fame, 287 

 Vol.. X. 1S05. 



Aurori borealis, a remarkaoie, 303 

 Azimuth-compa<s for aeroftatic experi- 

 ments, 47^ 



Bicon, Lord, the firft who proved the 



incomprembility of water, 3 — 145 

 Banks, Sir Jof. 24 — A remarkable fchif- 

 tus found in Iceland by, 184. — On the 

 caufe of the blight in corn, 225 

 Barberries, commonly reputed to occafion 



the blight in wheat, 23O 

 Barometers, for aeroftatic experiments, 



279 

 Barton, Prof, on the effect of metallic 



falts on vegetation, 241 

 Biiytes, native carbonate of, 5 

 Bafult, experiments on the gradual refri. 



geration of, 113 — 165 

 Bauer, Mr. 226 

 Baume, 141 

 Beddoes, Dr. 16 

 Beech, abforbent powers of the charcoal 



of, 15 

 Bennct's electrometer, 295 

 Benzoin, analytical experiments and ob- 



fervations on, 82 

 Bergelius, J. B. on cerium, 10 

 Bergmann, 41— 18S 

 Bernard, 301 

 Berthollet, 287 

 Biddle, Mr. J. on the denfity of mercury 



in its Mid (rate, 253 

 Biot, 278 

 Bitumen, conversion of the proximate 



principles of vegetables into, 18 1 

 Blaifc de Vignere, 88 

 B'eaching, me:hod of, practifed at Sa!z» 



burgh, 126 

 Blight in corn, on the caufe of, 225 



b Boerhaave, 



