An Act to explain and amend an Act of the present Session, for granting additional Duties of Customs on Goods, Wares or Merchandize imported into and exported from Great Britain; for allowing a Drawback on Carrot Tobacco exported; for altering on Barilla granted by the said Act; for allowing a Drawback of the additional Duties of Customs on Timber used in the Tin, Lead and Copper Mines of Devon and Cornwall; for ascertaining the time when the Bounty on Goods exported may be claimed; for better preventing the Clandestine Exportation of Goods; and for appropriating the Duties on Sugar, the Produce of Martinique and other Places, granted by an Act of this Session.