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Section 1. Salts of Magnesia,

II. Salts of Lime,

III. Salts of Barytes,

IV. Salts of Strontian,

V. Salts of Alumina,

VI. Salts of Yttria,

VII. Salts of Glucina,

VIII. Salts of Zirconia,

252

257

263

268

270

274

275

ib,

DIVISION III....OF METALLIC SALTS.

SECTION I. Salts of Gold,

II. Salts of Platinum,

II. Salts of Silver,

IV. Salts of Mercury,

V. Salts of Palladium,

VI. Salts of Rhodium,

VII. Salts of Osmium,

VIII. Salts of Copper,

IX. Salts of iron,

X. Salts of Tin,

276

277

279

282

290

291

ib.

ib.

294

301

EXPLANATION OF THE FRONTISPIECE,

IN VOLUME SECOND.

The Frontispiece exhibits a portable universal furnace, which is made of strong wrought iron plates, and is lined with bricks bedded in fire-proof loom. The height of this furnace without its chimney a a is two feet. The inner diameter of the cylindrical fire place measures 12 inches. The body of the furnace is elliptical; in its upper part a circular hole is cut, for receiving an iron sand-pot b which may be occasionally removed, and exchanged for an iron plate. In the front of the furnace there are three openings over cach other, furnished with sliding doors, and fitted with stoppers made of crucible ware. The lower opening c is the ash-pit of the furnace; it is composed of two register plates sliding backwards and forwards in grooves, in order to diminish or enlarge the opening for regulating the heat, by admitting or excluding air at pleasure. In the side of the furnace a hole is cut furnished with a stopper and door, for passing a tube through the fire part of the furnace, an expedient very necessary for a variety of chemical processes.

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