INDEX TO THE TWELFTH VOLUME, SECOND SERIES. A Page ACIDS, on the most sensible reactives for them, 66 121 Alum, fabrication of it in the Department de l'Ourte 48. 130 Bell, Miss. Patent for improvements in sweeping chimnies, 89 shafts of mines, VOL. XII. SECOND SERIES. L11 81 Berthollet, Berthollet, M. On the preparation of caustic alkali, Page 121 232.288 385 C Carr, Mr. Report on the sprinkling of malt on the floor, 118 87. 171 patent for preserving the equilibrium, and prevent- ing them over-turning, patent for a new mode of covering them, 345 255 Chapman, Mr. Patent for a belt for drawing coals, &c. up the 87.171 54. 137 107 Coaches, &c. patents for improvements in them, Coal, facts towards a history of it, Curwen, Mr. Description of a drill horse hoe or weed harrow, D Davy, Mr. On some chemical agencies of electricity 183. 257 E Earle, E Earle, Mr. Patent for certain improvements in the tillage and dressing of land, Observations on his patent, Electricity, on the chemical agencies of it, Elliott, Mr. Patent for improvements in coaches, &c. Page 313 329 183. 257 87 F Fir trees, remarks on pruning them, 354 Fire-alarm, description of one 400 Fish-oils, patent for a method of improving them, 174 Fishing-nets, description of a loom for making them, 418 236 H Harrow, description of a drill horse-hoe, description of a drill hoe, 107 110 Hawkins, Mr. Description of a double-lever press 401 Hawks, Mr. Method of making cast-iron wheels, 398 Hay, Mr. Account of the improvement of a moor near Tranent, East Lothian, 411 L112 Hemp, wheels, patent for a method of casting them, 399 K King, Mr. Mode of constructing the recoiling scapement, 350 27 L Land, patent for the tillage and dressing of it, 313 Laplace, M. New theory of the tides, 422 Leather, patent for a new method of tanning it, 21 trade, substance of a report of a committee of the Logan, Mr. Patent for a system of marine, fort, and field artillery, Loom, description of one for making fishing-nets, 69 148 161 418 M Malcolm, M Malcolm, Mr. Account of the methods of making bricks Malt, report on the sprinkling of it on the floor, Malt, patent apparatus for drying it, Moor, account of the improvement of one, Page 232. 288 118. 205 389 411 N Newman, Mr. Patent for a cattle-mill for expressing the juice of the sugar-cane Norton, Mr. Patent for a new-invented pump 348 25 Oils, patent for purifying them, 174 P Patents, |