In the reign of Theodosius the Great, the pagan religion and pagan knowledge were together destroyed. This emperor was restrained by no doubts, for he was very ignorant and, it must be admitted, was equally sincere and severe. Among his early measures we find an order that if any of the governors of Egypt so much as entered a temple he should be fined fifteen pounds of gold. He followed this by the destruction of the temples of Syria. At this period the Archbishopric of Alexandria was held by one Theophilus, a bold, bad man, who had once been a monk of Nitria. It was about A.D. 390. The Trinitarian conflict was at the time composed, one party having got the better of the other. To the monks and rabble of Alexandria the temple of Serapis and its library were doubly hateful, partly because of the Pantheistic opposition it shadowed forth against the prevailing doctrine, and partly because within its walls sorcery, magic, and other dealings with the devil had for ages been going on. We have related how Ptolemy Philadelphus commenced the great library in the aristocratic quarter of the city named Bruchion, and added various scientific establishments to it. Incited by this example, Eumenes, King of Pergamus, established out of rivalry a similar library in his metropolis. With the intention of preventing him from excelling that of Egypt, Ptolemy Epiphanes prohibited the exportation of papyrus, whereupon Eumenes invented the art of making parchment. The second great Alexandrian library was that established by Ptolemy Physcon at the Serapion, in the adjoining quarter of the town. The library in the Bruchion, which was estimated to contain 400,000 volumes, was accidentally, or, as it has been said, purposely burned during the siege of the city by Julius Cæsar, but that in the Serapion escaped. To make amends for this great catastrophe, Marc Antony presented to Cleopatra the rival library, brought for that purpose from Pergamus. It consisted of 200,000 volumes. It was with the library in the Bruchion that the Museum was originally connected; but after its conflagration, the remains of the various surviving establishments were transferred to the Serapion, which therefore was, at the period of which we are speaking, the greatest depository of knowledge in the world. [Sidenote: The temple of Serapis.] The pagan Roman emperors had not been unmindful of the great trust they had thus inherited from the Ptolemies. The temple of Serapis was universally admitted to be the noblest religious structure in the world, unless perhaps the patriotic Roman excepted that of the Capitoline Jupiter. It was approached by a vast flight of steps; was adorned with many rows of columns; and in its quadrangular portico--a matchless work of skill--were placed most exquisite statues. On the sculptured walls of its chambers, and upon ceilings, were paintings of unapproachable excellence. Of the value of these works of art the Greeks were no incompetent judges.