I have heard two accounts, in general not difficult of comprehension,
and containing some one's theories. If one apply the so-called
"principle of the tetrachord" (which is believed to constitute the basis
of music) in order to these stars, by which the whole universe of heaven
is divided into regular intervals, as each one of them revolves, and
beginning at the outer orbit assigned to Saturn, then omitting the next
two name the master of the fourth, and after him passing over two others
reach the seventh, and in the return cycle approach them by the names of
the days, one will find all the days to be in a kind of musical
connection with the arrangement of the heavens.

[-19-] This is one of the accounts: the other is as follows. If you
begin at the first one to count the hours of the day and of the night,
assigning the first to Saturn, the next to Jupiter, the third to Mars,
the fourth to Sol,[21] the fifth to Venus, the sixth to Mercury, and the
seventh to Luna,[20] according to the order of the cycles the Egyptians
observe in their system, and if you repeat the process, covering thus
the twenty-four hours, you will find that the first hour of the
following day comes to the sun. And if you carry on the operation
throughout the next twenty-four hours, by the same method as outlined
above, you will consecrate the first hour of the third day to the moon,
and if you proceed similarly through the rest, each day will receive the
god that appertains to it. This, then, is the tradition.[22]

[-20-] Pompey, when he had accomplished what has been related, went
again to the Pontus and after taking charge of the forts returned to
Asia and thence to Greece and Italy. He had won many battles; had
brought into subjection many potentates and kings, some by going to war
with them and some by treaty, he had colonized eight cities, had created