Publio purpose
Black's Law Dictionary · Henry Campbell Black, M.A. · 1910
Black's Law Dictionary
In the law of taxation, eminent domain, etc., this ls a term of classification to distinguish the objects for which, according to settled usage, the government is to provide, from those which, by the like usage, are left to private interest, inclination, or liberality.
People v. Salem Tp. Board, 20 Mich. 485, 4 Am. Rep. 400.
See Black, Co.nst.
Law (3d Ed.) p. 454, et seq.