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3o73f 
CONTENTS. 
Prospectus, i . . . 
- 
Page. 
I 
Writers on Political Economy, . 
11 
On Iron, ...... 
16 
Bleaching of Paper, .... 
155 
On Foreign Commerce, 
161 
Political Arithmetic, 
164 
Sugar from Beets and Grapes, . 
179 
Burning Glasses, .... 
180 
Dr. Bollman’s Manufacture of Platina, 
181 
Vinegar from Pyroligneous Acid, 
181 
Cast iron when hot may be sawed, 
182 
Notice to Correspondents, 
9 <> 
182 
Iron continued, .... 
186 
Description of a Foundry Furnace, . 
235 
On the Shrinkage and Expansion of Cast Iron, . 
240 
Manufacture of Forged Iron Vessels, 
253 
On Steel, ...... 
258 
Comparative Height of Mountains on the Earth, the Moon, > 
285 
and Venus, . 
• 5 
Herschell’s Telescope, 
286 
Evaporation in Vacuo, 
290 
Nutrition of Vegetables, 
295 
Sugar from Starch, .... 
304 
Cookery, ..... 
304 
Weights and Measures, 
317 
Magnesian Limestone, 
318 
On Gypsum, and the Methods of ascertaining it, 
323 
Chicory, ...... 
326 
On Vegetation and Manures, 
On Turnpike Roads, 
Notice to Correspondents, 
Cast Steel continued, 
On making line Cutlery 
On the Properties of Tempered Steel, 
330 
340 
341 
349 
418 
427 
