earliest literature of, in reference to threshold, [132];
modern Easter observance among, [221].
Gregor, Walter, quotation from, [34].
Griffis, William Elliot:
cited, [20];
references to, [101], [104], [230].
Grove of trees:
sacred landmark of boundary in primitive times, [173] f.;
in religious symbolisms, [230].
Guardian deity’s protection secured by stepping over threshold, [12].