The Mormon Settlement at Great Salt Take City—The Spiritual Wife System,A correspondent of the Oregonian, who has j 11st made the trip from Oregon to Utah, gives the following description of the Mormon Settlements at Great Salt Lake City:After leaving Fort-Hall, we had a pleasant j riderff two and a half days to the first Mormon settlement—and to water melons! On account of anticipated troubles with the Indians, the people have collected into forts, so called, or villages of adobes built closely round a small plaza. Though the absence of wood makes the country look bare, yet everywhere are the evidences of an. industrious people; in the stacks of hay and grain, and great piles of yellow “some pumpkins,” and the abundance ot other vegetables. The absence of wood as a building material, gives the houses of sticks and mud rather a hut-like appearance; but these structures are being rapidly replaced by good adobe edifices.The city has the look of a great collection of small farms, each lot being large, and cultivated in crops—all having ttie air of rustic plenty. The city is magnificently laid out, with noble broad streets, well kept. The stern rugged mountains in the distance, seems to wall in the valley, and separate the Mormons, with all their doctrines from the rest of the world.— They are building an adobe wall, fifteen feet high, around the ten acre lot in the center of the town, in which are the foundations of the tehiple, and the completed tabernacle or meeting house—a plain, large and neat room, holding 1,500 or 2,000persons. The Council House and Post Office are good stuccoed structures; all of these doing great credit to the energy of the people.Brother Brigham lives in a neat white cottage, with ‘‘double coach house,” but is building a fine new house. There is no doubt of his having about thirty wives, and that sometimes several of them go to church in an omnibus; but as all these things are part of a religious system, all things are conducted in order. 1 am stopping with a plain, but respectable lami-ly; the daughter of which, a fine young woman, is one of the twenty-five spiritual wives of Kimball, the second in command. She says she does not perceive much difference between, spiritual and other wives.They have discovered good coal in the immediate vicinity, and abundance of iron ore in the southern part of the territory. They are talking of Raildroads, dec. Brigham Yonng is evidently a very able man.—-V. Y. Times.