COMING.—The Kearney Herald of July 24th, chronic as the passage, at that point, en route for Utah, of a large "Mormon train in charge of Capt. Sam. D. White, an experienced and energetic gentleman." on Saturday, 21st ult. There were about 50 wagons, 280 emigrants, English, Scotch and Welch—all looking hearty, enjoying the trip "wonderfully well," and expecting to reach this city by the latter part of August.