But we have still to ask why it was that the bull was worshipped in one district of prehistoric Egypt, the hawk in another? Why was it that a particular fetish was the protecting deity of a particular sanctuary or nome? To this there can be but one answer. A modified form of totemism must once have been known in the valley of the Nile. The sacred animal must have been the last representative of the totem of the tribe or clan. The emblems borne on the flagstaffs of the prehistoric boats, like the emblems on the standards of the several nomes, must have been the animals or objects in which the clans saw the divine powers which held them together, and from which, it may be, they were derived. The subsequent history of animal worship in Egypt is a continuous drifting away from this primitive totemism. The inanimate objects first fall into the background; then, under the influence of a higher form of religion, the animals become symbols, and assume semi-human shapes, and finally one only out of a species is selected to become the incarnation of a god. But the god of whom he is the incarnation is a very different god from the divinity that was believed to reside in the original fetish. It is a god in the Asiatic and not in the African sense, a god whose nature is spiritual and free from the limitations of our earthly existence, so that he can enter at any moment into whatsoever form he desires. The old fetishes survived, indeed, but it was as amulets and charms; and to these the multitude transferred its faith as the State religion became more and more unintelligible to it. The magic lock of hair and image of a serpent preserved at Saft el-Henna, and said by the priests to have belonged to the sun-god, had doubtless come down from the days of fetishism.
It has often been asserted that besides the bull or the ram or the crocodile, there were other creatures of a composite or fabulous character which were also accounted sacred by the Egyptians. It is true that the sacred animal and symbol of Set seems to be of this nature. His forked tail and ass-like ears make it difficult to believe that any existing beast ever served for his portrait. But the sphinx, in whom the men of the Eighteenth Dynasty saw the image of Harmakhis, the rising sun, or the phoenix in whom the sun-god of Heliopolis was incarnated, belongs to a different category. They are not sacred animals in the sense in which Apis and Mnevis were so.