Ancient Pagan and Modern Christian Symbolism
by Thomas Inman, M.D. (1874)
Pagan and Christian symbolism
Figures 115, 116, are common devices in papal churches and pagan symbolism. They are intended to indicate the sun and moon in conjunction, the union of the triad with the unit.
I may notice, in passing, that Mr. Newton has showed to me some medieval woodcuts, in which the young unmarried women in a mixed assemblage were indicated by wearing upon their foreheads a crescent moon.