A full account of the rise, progress, & advantages of Dr. Assheton's proposal (as now improved and managed by the Worshipful Company of Mercers, London) for the benefit of widows of clergy-men, and others; By Settling Jointures and Annuities at the Rate of Thirty per Cent. With Directions for the Widow How to Receive her Annuity, Without any Delay, Charges, or Deductions