Melville Fuller,
Pollock v. Farmers' Loan Trust Company Hyde…
“ It is said that a tax on the whole income of property is not a direct tax in the meaning of the constitution, but a duty, and, as a duty, leviable without apportionment, whether direct or indirect. We do not think so. Direct taxation was not restricted in one breath, and the restriction blown to the winds in another.Cooley (Tax'n, p. 3) says that the word 'duty' ordinarily 'means an indirect tax, imposed on the importation, exportation, or consumption of goods'; having 'a broader meaning than 'custom,' which is a duty imposed on imports or exports' ”
