Saltpetre

-A fíench chemislly deprecates the use of saltpelro in curng meaf, and recommcnds sugar as more wholesome, and cqually efiïcaciotfs. He. attribirtee scuïvy, ulcert, artd other diseases to which mariners, nnd other persons livingoncured pfovisions, are subject eniirely to the cheraical chaflges prodaced by safpetr.