'An Act to permit, until the thirty-first day of August one thousand eight hundred and forty-five, wheat to be delivered from the warehouse or the vessel duty-free, upon the previous substitution of an equivalent quantity of flour or biscuit in the warehouse'
British Parliamentary bills relating to the abolition of the slave trade: Victoria, Chapter 92, 'An Act to permit, until the thirty-first day of August one thousand eight hundred and forty-five, wheat to be delivered from the warehouse or the vessel duty-free, upon the previous substitution of an equivalent quantity of flour or biscuit in the warehouse', dated 10 August 1842.