Sometime before 1730, a trigradal system (that is, a system of three grades or degrees) started to emerge in Freemasonry, which quickly became the standard system in the lodges of England, Ireland and Scotland. This seems to have been accomplished by the rearrangement and expansion of the original bigradal system, particularly by the elaboration of the Hiramic legend, and its full exposition in the third degree, that of a Master Mason. The emergence, in the 1740s, of "chivalric" degrees on the continent may be linked to the deliberate "gentrification" of Freemasonry in Chevalier Ramsay's Oration of 1737.