PART II.

Experiments and Observations made in the Year 1773, and the Beginning of 1774.

Sect. I. Observations on ALKALINE AIR 163

Sect. II. Of COMMON AIR diminished, and made noxious by various processes 177

Sect. III. Of NITROUS AIR 203

Sect. IV. Of MARINE ACID AIR 229

Sect. V. Of INFLAMMABLE AIR 242

Sect. VI. Of FIXED AIR 248

Sect. VII. MISCELLANEOUS EXPERIMENTS 252

Sect. VIII. QUERIES, SPECULATIONS, and HINTS 258

THE APPENDIX.

Number I. EXPERIMENTS made by Mr. Hey to prove that there is no OIL of VITRIOL in water impregnated with FIXED AIR 288

Number II. A Letter from Mr. HEY to Dr. PRIESTLEY, concerning the effects of fixed Air applied by way of Clyster 292

Number III. Observations on the MEDICINAL USES of FIXED AIR. By THOMAS PERCIVAL, M. D. Fellow of the ROYAL SOCIETY, and of the SOCIETY of ANTIQUARIES in LONDON 300

Number IV. Extract of a Letter from WILLIAM FALCONER, M. D. of BATH 314

Number V. Extract of a Letter from Mr. WILLIAM BEWLEY, of GREAT MASSINGHAM, NORFOLK 317

Num. VI. A Letter from Dr. FRANKLIN 321

Number VII. Extract of Letter from Mr. HENRY of MANCHESTER 323

THE INTRODUCTION.