ABSTRACT
And thus they go on counting, beginning anew with Sunday, Monday, &c.
Muslim astronomers call the planets the lords oj the On t?e. d d.vin counti h h f h d h b · Dominiays, an ,I counting t e ours 0 t e ay, t ey egln dieruan, with the dominus of the day, and then count the planets in the order from above to below. For instance, the sun is the dominus of the first day, and at the same time the
dominus of its first hour. The second hour is ruled by the planet of the sphere next under the sphere of the sun, i.e. Venus. The third hour is ruled by Mercury, and the fourth by the moon. Therewith the descending from the sun to the tether, i.e. the atmosphere of the earth, has an end, and in counting they return to Saturn. According to this system, the domimus of the twentyfifth hour is the moon, and this is the first hour of Monday. So the moon is not only the domimue of the first hour of Monday, but also the dominus of the whole day.
