Angel de Clavasio [Angelo Carletti de Chivasso] . Summa de casabas conscientae. Venezia [Venice]: Georgius Arrivabene, 2 May 1495. ISTC ia00726000 Double-sided single leaf, fol.. 252. Octavo (178 x 115 mm). 44 lines, Gothic letter, double columns. Section numbers, 10-13 along sides of columns, quire signature Y4 in footer of recto. A rare work by Angelo Carletti di Chivasso (1411-1495), an important theologian of the Order of Friars Minor. Titled the Summa de Casibus Conscientiae, and often called the Summa Angelica, after Angelo himself, contains 659 articles to constitute a ‘theological dictionary.’ First published in 1486, with many further editions until 1520, when it was burned by Martin Luther. This particular leaf, f. 252, starts out spicy, with the prescript for how to deal with confessions of carnal love and the sin of lust. “Afterwards, you should question him about the sin of lust. And if he says that he sinned with a woman (if he is male), or a man (if she is female), you should only inquire first whether they were unmarried or married, related by blood or affinity, or in religious orders, so that you may know what kind of lust it was, and from this determine what sort of sin of lust it is that you are dealing with.” If the carnal love was not in the ‘appropriate vessel,’ just move on. Don’t ask which vessel, just find out how often it took place, and if it started in the appropriate vessel. Could the sin haven been avoided? Did it happen in a church? If the sin was committed alone & voluntarily, the details you need are, “whether he desired to do evil with another person, or whether he made efforts toward such things, and who that person was—whether unmarried or related by kinship, etc.” The rest of the passage is less sexy, but does direct you to the appropriate passages for dealing with those who have, for example, stolen from a shipwreck.