Iroquois, social organization, [196];
wampum belts, [197];
numerical divisions, [198];
linguistic affinities with Mayas, [198], [199].
Irrigation, in ancient Peru, [146].
Ishtar, cult of, [342-350];
ring or circle, symbol of, [359], [360];
“axis of the heavens,” female Polaris, [503].
Isis, Egyptian goddess worshipped under form of cow, [406];
in sculpture and symbolism, [421-434];