Provided alwayes That this Act or any thing therin contained extend not, or be meant to restraine and prohibite the Importation of any the Commodityes of the Straights or Levant Seas loaden in English built shipping & whereof the Master & three Fourths of the Mariners at least are English from the usuall Ports or Places for lading of them heretofore within the said Straights or Levant Seas though the said Commodityes be not of the very growth of the said places,