The nature of a quarantine, as it is performed in Italy [electronic resource] : to guard against that very alarming and dreadful contagious distemper, commonly called the plague. With important remarks on the necessity of laying open the trade to the East Indies; to enable the government (by an increase of revenue arising from an extension of commerce) to take off the taxes which burthen [sic] the nation. The only true means of providing a relief for the general distress.