29:17 · This is a sign meaning boil according to an old German treatise. Semiotically the ideogram can be analyzed as for fire (the heat necessary for boiling), for the water to be boiled, and a dot or point in the center from the sign for the sun, , to stress the heating aspect and to distinguish the ideogram from the common representation of alcohol (fire-water, as the Native Americans used to say) in alchemy by the hexagram.