CHAP. II.
ENGINES OF SAVERY AND NEWCOMEN.
SAVERY'S ENGINE.—BOILERS AND THEIR APPENDAGES.—WORKING APPARATUS.—MODE OF OPERATION.—DEFECTS OF THE ENGINE.—NEWCOMEN AND CAWLEY.—ATMOSPHERIC ENGINE.—ACCIDENTAL DISCOVERY OF CONDENSATION BY INJECTION.—HUMPHREY POTTER MAKES THE ENGINE WORK ITSELF.—ADVANTAGES OF THE ATMOSPHERIC ENGINE OVER THAT OF SAVERY.—IT CONTAINED NO NEW PRINCIPLE.—ITS PRACTICAL SUPERIORITY.
