Bear in mind also that the Egyptians knew sciences, of which today, despite all our advantages, we are profoundly ignorant.

Acoustics, for instance, an exact science with the builders of the temples of Karnak, of Luxor, of the Pyramids, is today a mystery to Bell, and Kelvin, and Edison, and Marconi.

Again, these old miracle-workers probably understood some practical way of using other forces, and amongst them the forces of light that at present we do not dream of.

But of this matter I shall speak later.

That Magic Coffer of Queen Tera is probably a magic box in more ways than one.