In the "Boston Post-Boy" for Dec. 12, 1763, is an account of the dedication of the Synagogue in Newport, R.I. _NEWPORT, December 5._ _On Friday last, in the Afternoon, was the Dedication of the new Synagogue, in this Town. It began by a handsome Procession, in which were carried the Books of the Law, to be deposited in the Ark. Several Portions of Scripture, and of their Service, with a Prayer for the Royal Family, were read, and finely sung by the Priest and People. There were present many Gentlemen and Ladies. The Order and Decorum, the Harmony and Solemnity of the Musick, together with a handsome Assembly of People, in an Edifice the most perfect of the Temple Kind perhaps in America, and splendidly illuminated, could not but raise in the Mind a faint Idea of the Majesty and Grandeur of the antient Jewish Worship mentioned in Scripture._ * * * * * We find by the "Salem Mercury" of March 30, 1789, that New Hackensack was fifty or sixty years before Rochester in "rappings" and "table-tippings." Who shall say that these manifestations, whatever they are, are not as old as man himself? The best and wisest of us do not know everything. There may be some science, yet in its infancy, which will some day be explained, so that all these things will then be perfectly understood. The account here given has no appearance of deception. Had the girl lived a hundred years earlier, she would in all probability have been hanged for a witch; but had she lived in these days, she might have reaped a harvest from lectures and séances. PHILADELPHIA, March 10. _Extract of a letter from a gentleman at Fishkill, dated March 3, 1789._