Thibet, astronomical science, [301];

Buddhist of, [315].

Thomas, Cyrus, [109].

Thor, Norse supreme god, [473].

Thor's hammer, [119].

Thucydides, [457].

Tiahuanaco, place of first appearance of Incas, [133];

monolithic doorway, [165];

swastika sacred symbol, [166];

ruins of, [167-169], [209].