Wiley Blount Rutledge

“ Apportionment in itself prevents taxation of extrastate 'events' or portions of the business done, unless the apportionment is itself constitutionally invalid as not reflecting a sufficient approximation to what the state may be entitled, on the facts, to tax. ”

“ They do not lose that character merely because an apportioned tax may be levied upon the gross receipts from them. The incidence of that tax is flatly on the commerce, though only on the local portion of it. So here I do not think that the local activities for the protection of which the Mississippi tax purports in terms to be laid become separate from the interstate business which petitioner conducts in Mississippi, either by reason of the apportionment or otherwise. ”

“ That the apportionment in the one case is made in relation to mileage and in the other to the value of capital 'used, invested or employed within this state' is of no significance, since the states have considerable latitude in the selection of fair methods of making apportionment. ”