Our attention has been called to a letter written by Cotton Mather, which for uniqueness and as a specimen of some of the phases of Puritanical Christianity is instructive and entertaining. We do not know if it has ever been published, but we have assured ourselves of its genuineness, as hereafter stated. It is as follows:
September ye 3rd, 1682.
"To ye aged and beloved John Higginson.
