Its sculptured apartments contained the Philadelphian library, and were crowded with the choicest statues and pictures.

This library eventually comprised four hundred thousand volumes.

In the course of time, probably on account of inadequate accommodation for so many books, an additional library was established in the adjacent quarter Rhacotis, and placed in the Serapion or temple of Serapis.

The number of volumes in this library, which was called the Daughter of that in the Museum, was eventually three hundred thousand.

There were, therefore, seven hundred thousand volumes in these royal collections.
Alexandria was not merely the capital of Egypt, it was the intellectual metropolis of the world.