Virginia and Truckee Railroad. - The Enterprise says: There are now about 600 Chinamen at work on that part of the Virginia and Truckee Railroad lying between Steamboat and Carson. The track will be graded through to Washoe by June 20th, and next Saturday they will begin laying track from Steamboat to Washoe. By the 1st of July all the grading from Steamboat to Carson will be completed. The work is being pushed most vigorously at every point. In regard to the rolling stock on this end of the road, we may mention that the locomotive Nevada is laid up at the round-house for repairs, and the Virginia is being repainted. The Humbolt is doing excellent service since leaving the repair shop. A new locomotive, to be called the Reno, is expected shortly from Philadelphia. It will be used in drawing a passenger train.