Babylonian Talmud, Second Edition, Tractate Gittin, Venice: Daniel Bomberg, 1526, Tractate Kiddushin, Venice: Daniel Bomberg [1543]

Kiddushin is the final tractate in the order Nashim and deals with matrimonial matters. Technically, kiddushin is a sacred relationship whereby a woman is consecrated to a man and forbidden to all others during the duration of the marriage.  Kiddushin is akin to "betrothal" or "engagement" in that it represents a formal stage preliminary to marriage proper (nissu'in).  In contrast to these contemporary designations in English, kiddushin may be dissolved only by a formal bill of divorce or get. The laws of divorce are treated in the tractate, Gittin (divorces).  Although it would perhaps seem intuitive to place Gittin after Kiddushin within the internal organization of the order Nashim, due to the custom of arranging the tractates in the order of their length, Gittin, containing nine chapters precedes Kiddushin which boasts only four. The entire tractate deals with bills of divorce, with few digressions on other topics. 

When Daniel Bomberg published his second edition of the Babylonian Talmud between the years 1526-1539, no tractate Kiddushin was printed. When Kiddushin was reissued by Bomberg in 1543, although technically only the second edition of that tractate, it was printed as a part of the series of tractates referred to by most scholars as the "Third Bomberg edition, " printed between 1543-49.