“ It may tax the entire property, tangible and intangible, constituting the car line as used within its limits, and may tax the same at its real value as part of a going concern. The record makes it reasonably certain that the property, valued with reference to its use and what it earns, is worth considerably more than the cash value of the cars taken separately-enough more to indicate that the tax is not in excess of what would be legitimate as an ordinary tax on the property taken at its real or full value. ”

“ Whether the tax constitutes an unconstitutional restraint or burden on interstate commerce is the matter for decision.
The company is an Illinois corporation and operates plants in Iowa, Missouri and Kansas for slaughtering live stock and converting the same into fresh meats and other articles of commerce. It sells the products throughout the United States, maintains branch houses in several states, including three in Minnesota, and owns a line of refrigerator cars wherein the products are shipped to the branch houses and places of consumption. ”

“ As construed and applied by the state court, the Minnesota law requires a freight line company, meaning a company furnishing or leasing cars to railroads for freight transportation, to report annually its gross earnings from the operation of its car line within the state and to pay, in lieu of other taxes on the property so employed, a tax fixed at a stated per cent. ”