The lost language of symbolism : an inquiry into the origin of certain letters, words, names, fairy-tales, folklore, and mythologies (1912)
Bayley, Harold · New York : Barnes & Noble · leaf 218
203 fig. 478, where one has two horns and the other but one,denoting, presumably, male and female. In Egypt, saysProfessor Petrie, two serpents were usually representedtogether—one often with the head of Isis, the other of SerApis^ (=Osiris), so, therefore, male and female. The letter G surmounted… … Over figs. 480 to 482 appear the initial M, standingpresumably for Maat, the Goddess of Truth. Maat, thepersonification of original and celestial Reason,^ was regardedas the Great Mother, and her name was spelled Maat,Maut, and Maht. The lettering around the watermarkeddesigns herewith reads Maht…
Symbolism · Printers' marks · Watermarks
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