Ore by Railway. – An idea of the vast amount of ore from the Comstock now being shipped daily, by the Virginia and Truckee Railroad, says the Carson Appeal is conveyed in the fact that 56 cars of eight tons capacity each, and nine cars of ten tons each are loaded at the mines and dumped at the mills every 24 hours. This makes a daily aggregate of 538 tons! This amount will doubtless be increased as soon as the Mexican mill with its tremendous capacity is fully under way.