Labels:book | bulletin board | poster | reckoner | sky OCR: venerable precept. n Calder Bull, 3 Dall. 386 (1798) Justice Chase engaged in lengthy discussion of the differences between ex post facto and retrospective laws. Dall. at 391- 393. While indicating that both categories are "generally unjust; and may be oppressive Catder at 391. he found that only penal laws fall "within the words and the intent of the prohibition Calder at 390 [emphasis in originall. The term post facto was in use "long before the Revolution, and had acquired an appropriate meaning Legistators, Lawyers, and Authors. Calder at 391 [emphasis in original}. Justice Chase found this meaning to encompass four categories: 1st Every law that makes an action done before the passing of the Jaw and which was innocent when done criminal: and punishes such action. Every law that aggrav ...