LATE AND IMPORTANT FROM UTAH.
Capt. VAN VLIET, Assistant Qurtermaster U.S. Army has arrived at St. Louis direct from the Territory of Utah, having left Great Salt Lake City on the 14th ult.
We understand that the Mormons are determined not to allow the United States troops to enter Salt Lake Val-ley, and will use force to prevent them if necessary. They look upon the present movement of Govern-ment as only the renewal of the persecutions which they complain of having endured in Missouri and Illinois, and are determined to resist it at the outset.
Capt. VAN VLIET met the troops the 22d of September on the Sweet Water, some two hundred and thirty miles beyond Fort Laramie. They were all well and in good spirits. Some of the supply trains were at Harris Fork, one hundred and forty-three miles this side of the Val-ley, while others were far behind, and it is very doubt-ful if they can enter the Salt Lake Valley this season.
Col. JOHNSON, with his escort, was met on the 1st of October, ninety miles this side of Fort Laramie, and de-termined to enter the Valley of Salt Lake this fall.
Gov. CUMMING and Sec. HARTNETT were met on the 8th of this month, ninety miles beyond Fort Kearny, all well. A heavy snow fell at Fort Bridger on the 15th of September.
Capt. Van Vliet has made an extraordinary trip, hav-ing travelled over 2,400 miles by land since the 1st of August. We hear that he passed a week in Great Salt Lake City. He was treated with much consideration, and invited to partake of the hospitalities of the leading men of the city. But on all occasions, and from every quarter, he heard only one expression of opinion, and that was that they never would permit United States troops or the officers appointed by the United States Government to get a foothold in their dominions. In all their public declarations and in their private conversations this sen-timent is boldly avowed: they will never suffer the troops to enter the city; and if they do it will be after the town has been committed to the flames, the territory around it laid waste, and all the inhabitants have fled to the mountains. Their fanaticism knows no bound; they believe BRIGHAM YOUNG to be the appointed agent of the Lord, and whatever he commands them to do they will perform with alacrity. They say that they have provisions sufficient to last them for three or four years, and that, persecuted as they have been and are by the Americans, they will resist to the last extremity.
These statements being true, as they undoubtedly are, the Government will have to make levies of new men, and to dispatch heavy reinforcements to the army in Utah next spring.
Dr. BERNHISEL, Delegate to Congress from Utah, ar-rived in company with Capt. Van Vliet.—St. Louis Rep.