Science here reached a much higher stage then in the valley of the Nile.

An elaborate scheme of the universe was devised, a system growing out of the Divine Will, and a recognition for the first time of a law guiding and controlling heaven and earth alike.

Here, too, we find medicine ancillary to religion.

Disease was due to evil spirits or demons.

"These 'demons'-- invisible to the naked eye were the precursors of the modern 'germs' and 'microbes,' while the incantations recited by the priests are the early equivalents of the physician's prescriptions.