(104) Morning and evening are and reach up from the earth to the moon only, and take their original from the light of the sun, and this makes evening and morning, as also the outward day, and the outward dark night, as every one knoweth.

(30) And in periods of seven days the moon undergoes its changes. In the first week she becomes half moon; in the second, full moon; and in the third, in her wane, again half moon; and in the fourth she disappears. Further, as Seleucus the mathematician lays down, she has seven phases. First, from being invisible she becomes crescent-shaped, then half moon, then gibbous and full; and in her wane again gibbous, and in like manner half moon and crescent-shaped.

(1) On the nature of generation it says in revelation, that a woman when she comes out from menstruation, during ten days and nights, when they go near unto her, soon becomes pregnant.