The remains of the Serapeum and the burial-places of the sacred bulls (who, when alive, were worshipped at Memphis), were discovered by M. Mariette in 1860-61. Of the former, sufficient traces were found to show that it resembled in its arrangement the ordinary Egyptian temple, viz., with pylons, preceded by an avenue of sphinxes, and an enclosed space behind, with halls and chambers, in one of which was the opening to the inclined passage leading to the subterranean galleries. The earlier tombs of the 18th, 19th, and 20th dynasties were hewn in the rocky platform. From the 22nd to the 25th dynasty the bulls were buried in a subterranean gallery. The same system was adopted from the 26th dynasty till the time of the later Ptolemies (_circa_ 50 B.C.), but the galleries were of greater size and magnificence, having an extent of 400 yards, and the bulls were interred in immense granite sarcophagi placed in niches, on both sides of the galleries, but never opposite to one another. The chief historical value of the discovery rests in the steles, or inscribed tablets, some 500 in number, placed there as ex-votos by pious visitors, the principal examples of which are now in the Gizeh Museum or in the Louvre. CHAPTER VI. ETHIOPIA. CONTENTS. Kingdom of Meroë—Pyramids. It was long a question with the learned whether civilisation ascended or descended the Nile—whether it was a fact, as the Greeks evidently believed, that Meroë was the parent State whence the Egyptians had migrated to the north, bringing with them the religion and the arts which afterwards flourished at Thebes and Memphis—or whether these had been elaborated in the fertile plains of Egypt, and only in later times had extended to the Upper Nile. Recent discoveries have rendered it nearly certain that the latter is the correct statement of the facts—within historic times at least—that the fertile and easily cultivated Delta was first occupied and civilised; then Thebes, and afterwards Meroë. At the same time it is by no means improbable that the Ethiopians were of the same stock as the Thebans, though differing essentially from the Memphites, and that the former may have regarded these remote kindred with respect, perhaps even with a degree of half-superstitious reverence due to their remote situation in the centre of a thinly-peopled continent, and have in consequence invented those fables which the Greeks interpreted too literally.