RARE Boom Dert. XH .B756 -H13A
x.
SHIPS--HEATING AND VENTILCATION.
Hales, Stephen, 1677-1761.
An account of a useful discovery to distill double the usual quantity of sea-water, by blow- ing showers of air up through the distilling liquor: and An account of the great benefit of ventilators in many instances, in preserving the health and lives of people, in slave and other transport ships, which were read before the Royal Society. Also An account of the good ef- fect of blowing showers of air up through milk, thereby to cure the ill taste which is occasioned
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