Joist were typically planed smooth (wrought) and sometimes chamfered or beaded. Joists may join to their supporting beams in many ways: joists resting on top of the supporting beams are said to be "lodged"; dropped in using a butt cog joint (a type of lap joint), half-dovetail butt cog, or a half-dovetail lap joint. Joists may also be tenoned in during the raising with a soffit tenon or a tusk tenon (possibly with a housing). Joists can also be joined by being slipped into mortises after the beams are in place such as a chase mortise (pulley mortise), L-mortise, or "short
Mitre of Heracles; headdress of the Jewish high priest al. The "camelaucum" (Greek: καμιλαύκιον, "kamilaukion"), the headdress, that both the mitre and the Papal tiara stem from, was originally a cap used by officials of the Imperial Byzantine court. "The tiara [from which the mitre originates] probably developed from the Phrygian cap, or frigium, a conical cap worn in the Graeco-Roman world. In the 10th century the tiara was pictured on papal coins." Other sources claim the tiara developed the other way around, from the mitre. In the late Empire it developed into the closed type of Imperial crown used by