The circle of commerce. Or The ballance of trade : in defence of free trade: opposed to Malynes little fish and his great whale, and poized against them in the scale. Wherein also, exchanges in generall are considered: and therein the whole trade of this kingdome with forraine countries, is digested into a ballance of trade, for the benefite of the publique. Necessary for the present and future times. By E.M. merchant.