Mormons leaving Nauvoo.—A gentle* man, who recently arrived from Nauvoo* informs the editor of the Inquirer* that whole families at a time were continually leaving that place. The delusion appeared to he on the decline. Our informant describes the houses a* small*and mean looking log, board and 9od shanteeg. The temple to be large, should it ever be bnilt, but at present the foundation only laid. Joe Smith keeps the K only store of any consequence, and of course* he monopolises moat of the trading profits* The whole matter is a system as he con* ceives* of cruel and heartless deception selecting victims not only in this country, hut even more extensively in England.—Phil, Saturday Po»t.f1£Q