249 U.S. 313 249 U.S. 313 39 S.Ct. 300 63 L.Ed. 620 UNITED STATESv.PURCELL ENVELOPE CO. No. 168. Argued March 10, 1919. Decided March 31, 1919. Mr. Assistant Attorney General Frierson, for the united states. Mr. Arthur Black, of Boston, Mass., for appellee. [Argument of Counsel from page 314 intentionally omitted] Mr. Justice McKENNA delivered […]