[19] 9 Wall. 353 (1870).
[20] Ibid. 362.
[21] 161 U.S. 275 (1896).
[22] Ibid. 283.
[23] Reagan v. Mercantile Trust Co., 154 U.S. 413 (1894).
[24] Johnson v. Maryland, 254 U.S. 51, 56 (1920).
[25] Penn Dairies v. Milk Control Comm'n., 318 U.S. 261 (1943).
[26] Pacific Coast Dairy v. Dept. of Agriculture, 318 U.S. 285 (1943).
[27] Martin v. Hunter's Lessee, 1 Wheat. 304, 335 (1816).
[28] 93 U.S. 130 (1876).