Ptolemy - Ptolemy's Tetrabiblos - Book 3: Ch. 7 lyrics

CHAPTER VII MALE OR FEMALE AFTER the indications which regard brothers and sisters have been investigated by the foregoing rules, consonant with nature and reason, the actual native, or the person to whom the scheme of nativity is specially appropriated, demands attention; and the first and most obvious inquiry is whether the said native will be male or female. The consideration of this question rests not on a single basis, nor can it be pursued in one sole direction only: it depends, on the contrary, upon the several situations of the two luminaries and the ascendant, and upon such planets as possess any prerogatives in the places of those situations; and all these circumstances should be specially observed at the time of conception, and, in a general manner also, at that of birth. Observation of the said three places, and of the mode in which the planets ruling them may be constituted, is wholly indispensable: it must be seen whether all, or most of them, may be constituted masculinely or femininely; and prediction must, of course, be regulated in conformity with their disposition, so observed; as tending to produce a male or female birth. The masculine or feminine nature of the stars is to be distinguished in the manner already pointed out in the commencement of this treatise. For instance, by the nature of the signs in which they are situated, by their relative position to each other, and also by their position towards the earth; as when in the east, they are masculinely disposed, and, when in the west, femininely. Their relative position to the Sun also affords guidance in distinguishing them; since, if they should be matutine, they are considered to signify the male gender; and if vespertine, the female. Thus, from the s** chiefly prevalent, as observed by these rules, that of the native may be rationally inferred.