tecpatl (flint knife) symbol of, [183];

in connection with tree symbolism;

title, “Heart Of Heaven,” [189];

among the Zuñi, [202];

at Copan, [222], [224];

reflected in bowl of water=Creator, [225];

in Shakespeare, [247];

represented central face in Mexican calendar-stone, [250];

Calendar-stone based on observation of, [257], note;

in connection with pyramid, [273], [274];