UNITED STATES.—MORMONISM.—We may state that we saw a highly intelligent gentleman, a day or two since, who has just come from Nauvoo, where he saw and conversed with Smith, and many of the Mormons. Our friend computes their number at about 70,000; (then say 100,000;) says they are governed by a military despotism; that all the orders of the chief are obeyed as the words of inspiration; and that the numbers of his followers are constantly increasing, especially by emigration from England. Their temple is of magnificent dimensions; their printing press in constant operation; their military regularly drilled; and their preachers active with "a method of their madness." Our friend shewed us a printed order or revelation of the prophet, which was a sort of hieroglyphic, with a brief explanation and application subjoined. As an instance of their infatuation, he told us that he shewed Smith a Greek Psalter, who pronounced it a valuable Egyptian manuscript: but though the matter was explained to many of the Mormons, it was impossible to shake their confidence in the inspiration of the prophet. Smith is called by many the Mohammed of the West; and Prof. Jackson inclines to the opinion that he and Rigdon (who is the master knave) are preparing systematically for an invasion of Missouri, to redress their alleged grievances—New York Churchman.