Provided always and it is hereby further enacted That in case the whole Sum of Two Millions shall not be subscribed as aforesaid before the said Nine and twentieth Day of September which shall be in the Year of our Lord One thousand six hundred ninety eight that then the Subscribers and Contributors for and towards raising the said Sum of Two Millions their Executors Administrators Successors and Assigns shall only have and receive so much and such Part and Proportion of the said Yearly Fund as shall be after the Rate of Eight Pounds per Centum per Annum for such Sum or Sums of Money as shall be so respectively subscribed.