Human Sheep

“How the hormones work nobody knows, but it is possible that they change the consistency of the mucus on the cervix, or even that they alter the acidity of the vagina. Putting baking soda in the vagina of a rabbit was proved to affect the sex ratio of its babies as early as 1932.”

Matt Ridley (1993) The Red Queen (p. 118) - data from Unterberg and Kirsch (1932). Misters Unterberg and Kirsch, I ask you: “Why? OMFetc. Why?”