INDEX. 



Count Rmnford's doftrine refpefting 

 fluids as non-conduftors of caloric, 

 134, 198, Z74 



Berthollet the younger, 273 



Black, 76 



Blacquiere, Col. 23. 



Bleaching of wool, experiments and obfer- 

 vations on, 96 



Blumenbach, Prof. loz 



Boiler of ftone, faft refpefting water heat- 

 ed in a, 169 



Boiling oily matters, fpontaaeous inflam- 

 mation from, 239 



Bones of animals, contain a phofphate 

 not found in thofe of men, 85 — Method 

 of feparating magnefia from, 86 



Books, account of ne".', 22a 



Bournon, count de, 187 — His reply to the 

 Abbe Hauy's obfervations on arfeniated 

 copper, 247 



Bramah, Mrv I. defcription of his jib on 

 a new conftrudtion, 99 



Bramley, R. R. El^. on the dey rot in 

 timber, 8 



Brown precipitate from platina, 120 



Brugnatelli, 142 — His new method of pre- 

 paring nitric ether, 143 



Bruhl, Count de, 47 



Bucket, gaining and lofing of an early 

 date, 37 



Burg, 160 



C. 



Caloric, a compound of plus and minus 

 eledriclty, 71 — On its nature as de- 

 duced from galvanic experiments, 88 



Cantharides, on the virtues and principles 

 of, 75 



Cirbonate of lead, analyfis of 282— Sin- 

 gular fadl in its fulion, 283 



Carlifle, A. Efq. 71 — On the temperature 

 of che fea, 131 



Cartwright, Rev, E. defcription and draw- 

 ing of his three furrow plough, 24 



Cafanova, 235 



Caylus, Count, 233 



Chain-pump, of an early date, 37 



Chappe, 164 



Charafters, exterior, the only means af 

 feparatiug the mineralogical fpecies, 

 252 



Charcoal, durability of, 8 — Emits an in- 

 tenfe light in galvanic combuftion, 73 

 — Spontaneous inflammation of, in a 

 powder magazine, 241 — Contains- phof- 

 phorus, 242 



Charles, Cit. 80 



Mr. D. account of his machine fox 



laying land level, 181 



Charring prevents the dry rot in timber, 6 



Chenevix, Mr. his analyfes of arfeniated 

 copper, 188 — 248 



Chronometers, caufes of irregularities in, 

 46 — Great accuracy of the mean refult 

 from a number of, 65 — Tables of the 

 going of three, 68 



Cleanflng of wool, experiments and ob- 

 fervations on, 94 



Clock, new ftriking part for a, 162 



Cobalt, fuperior hygrometric properties of 

 its oxide, 85 



Cock, Mr, 20 



Coke, Mr. 279 



Cole's chain pump, 37 



Collet-Defcotils on the caufe of the differ- 

 ent colours of the triple falts of platina, 

 and on a new metallic fubftance in that 

 metal, Ji8, 220 



Coloured glafs, antique, 227 



Combuftibles, abforb difterent quantities of 

 oxigen from common air, 146 



Combuftion, its intenfity depends on the 

 ftate of the oxigen, 147 



Comprellion of the earth, mean, 159 



Copal varnilh, eafy method of preparing, 

 142 



Copper, unneceflary in a galvanic appara- 

 tus, 1 — Obfervations on the arfeniated, 

 187, 247 — Yields different coloured 

 enamek according to its ftate of oxida- 

 tion, 229 — Mutual precipitations wi^h 

 iron, 271 



Councer. 



