Index, 
Engravings, Massey’s sealog and sound- 
ing machine, 111. 
driving copper bolts into ships, 
180. 
Description of a water wheel, 
183 
securing doors, &c. from house- 
breakers, 185. 
Ramsden’s optigraph improv- 
ed, 198. 
perspective and elliptic instru- 
ment, 201. 
Cumberland, on perspective, 
255 
Edgeworth’s perspective in- 
strument, 258. 
Mortlock’s surveying, 263. 
[ perspective instrument, 265. 
Wollaston’s camera lucida, 
26?. 
Coxe’s improved bedstead, 
283. 
Cayley’s plan for an improved 
theatre, 350. 
Malton’s port-folios, 362. 
Plowman’s improved sheep- 
fold, 365. 
"Le Caan’s improved tram- 
plate, 368, 
Bowler’s screw press, 373. 
securing beams of ships with- 
out wooden knees, 376. 
Varty’s linch-pins for car- 
riages, 378. 
Ward’s machine for workers 
in white lead, 453. 
Rawlinson’s mill for levigating 
colours ; with an improved 
mill for indigo and dry co- 
lours, 456. 
Saddler, on refining lead, 463 . 
Atkins’s universal hydrometer, 
46 9. 
Waistell’s improved field gate, 
4 75. 
Edgeworth’s description of an instru- 
ment for drawing in perspective, 258. 
Edgeworth, on the construction of thea- 
tres, 853. 
Electrical jars, to increase their charg- 
ingcapacity, 193. 
Enamel, researches on its composition, 
389, 401. 
F. 
Falconer’s remarks on soap suds as a 
manure, 289. 
Feathers, process to clean them from 
their animal oil, 233. 
Files, made of stone ware, 387. 
Filtering stone, new mode of use fori 
p urifying water, 32. j 
Flax of New Zealand, compared with 
other substances, 444. 
G. 
Gate, an improved one for fields, 475. 
Georgi, on Swedish stone paper, or ar- 
tificial slate, 133* 
Germon, memoir of, on the vineyards 
and wines of Champagne in France, 
1, 81, 166 
Goods, of cotton, silk, or woollen^ to 
clean, 236. 
Grafting, walnut, mulberry, and ches- 
nut trees, observations on, 295. 
Grand’s method of preparing painters’ 
pannels, 272. 
II. 
Herrings, British, cured as Dutch, 40. 
Hydraulic ram, 80. 
Hydrometer, Atkins’ universal, 469. 
I. J. 
Indigo mill, an improved one, 462. 
Ink, writing, report on its composition, 
43. 
Lewis’ receipt for, 48. 
Ribancourt’s receipt for, ibid. 
Intelligence, &c. 80, 240. 
Irwin’s experiments on soap suds as a 
manure, 289. 
Jones’ description of the optigraph, 198. 
K. 
Knight, on grafting- walnut, mulberry, 
and cliesnut trees, 295. 
Klaproth, on employing platina in 
porcelain painting, 439. 
L. 
Labillardiere, on the comparative 
strength of New Zealand flax, 444. 
Lead, white, to prevent injury to work- 
men in preparing, 453. 
on refining it, 463. 
Le Caan’s improved tram plates, 368. 
Lenormand, on the art of moulding in 
wood, 417. 
Lewis’ receipt for writing ink, 48. 
linchpins of carriages, to secure, 578. 
Lussac and Thenard’s memoir on vege- 
table and animal analysis, 49. 
M. 
Machine to raise water to any height, 26. 
Malton, on making large portfolios, 362. 
Mammoth, Adams’ account of a jour- 
ney to obtain, 219* 
Massey’s description of a sea log and 
sounding machine, 111. 
Method of relieving horses fallen In 
loaded carts, 34. 
