In Almy v. California, 24 How. 169, it was held that a duty on a bill of lading was the same thing as a duty on the article which it represented; in Railroad v. Jackson, 7 Wall. 262, that a tax upon the interest payable on bonds was a tax not upon the debtor, but upon the security, and in Cook v. Pennsylvania, 97 U.S. 566, that a tax upon the amount of sales of goods made by an auctioneer was a ta