It is perhaps during the few hours of its rapid development at the base of its ovarian sheath, it is perhaps on its passage through the oviduct that it receives, at the mother's pleasure, the final impress that will produce, to match the cradle which it has to fill, either a female or a male.
PERMUTATIONS OF SEX.
Thereupon the following question presents itself.

Let us admit that, when the normal conditions remain, a laying would have yielded m females and n males.

Then, if my conclusions are correct, it must be in the mother's power, when the conditions are different, to take from the m group and increase the n group to the same extent; it must be possible for her laying to be represented as m - 1, m - 2, m - 3, etc.
females and by n + 1, n + 2, n + 3, etc.

males, the sum of m + n remaining constant, but one of the sexes being partly permuted into the other.

The ultimate conclusion even cannot be disregarded: we must admit a set of eggs represented by m - m, or zero, females and of n + m males, one of the sexes being completely replaced by the other.
Conversely, it must be possible for the feminine series to be augmented from the masculine series to the extent of absorbing it entirely.