7 " 
'tv 
0 n<to 
CONTENTS. 
> c / 
Starch manufacture 
Manures . . * 
Bricks : second memoir 
Ohio Falls, with a plate. 
Bleaching, with a plate 
Merino Ram, with a plate 
Hydrostatical engine, with a plate 
Ducket’s plough, with a plate 
Political economy 
Notices., viz. Decomposition of Azof 
To Correspondents 
New Publications 
lode on violaceous gas 
Lead : 
Assay and Analysis of the ores 
Smelting and reduction of Lead ores 
Refining Lead for Silver 
Properties of Metalic Lead 
Processes for manufacturing White Lead 
Manufacture of Red Lead 
Acetite (or Sugar) of Lead 
Patent Mineral Yellow 
Sheet Lead Boxes . 
Manufacture of Shot 
To ascertain the quantity of Whiting in White L 
Chromat of Lead 
Naples Yellow 
Mortar (Editor) 
Water Cement (Editor) 
Perkins on Water Mills (Plate) 
Graff’s Steam Engine Boiler (Plate) 
Statistics (Editor) 
Latrobe on Roads 
Deliquescent and efflorescent Salts 
On Manufactures 
Cookery .... 
Notices 
Lead : 
Shot .... 
Sugar of Lead 
Tin : .... 
Ores of Tin 
Weight of mixtures (alloys) of tii^and lead 
la 
. 145 
. 148 
. 153 
. 1 62 
. 164 
. 164 
. 166 
. 170 
. 172 
. 174 
. 175 
. 175 
. 175 
. 177 
. 486 
212, 243 
* 217 
. 2 19 
. 236 
. 254 
* 256 
. 257 
. 258 
;ad 
264, 305 
. 265 
. 266 
* 272 
. . 273 
. 275 
. 27 3 
. 2S4 
. 297 
. 298 
. 309 
. 328 
. 339 
. 539 
. 343 
. 345 
. 345 
o 865 
