Heinrich Schliemann,
Mycenæ: a narrative of researches and discoveries at Mycenæ and Tiryns
“ We find there a Hera, who wore, so to speak, the mantle of Isis, besides carrying the spoils of one or more personages enrolled in the Golden Book of the old Pelasgian dynasties. Nothing could be more natural than a decapitation of the Egyptian Isis, not penally but for her honour. She might consequently appear with the human head; but, not to break sharply with the traditions of the people, the cow-head, and even the cow figure, might nevertheless be retained as symbols of religion. ”
