Sexual science : including manhood, womanhood, and their mutual interrelations ; love, its laws, power etc. ... as taught by phrenolog
Sexual science is an 1870 American popular treatise by the phrenologist Orson Squire Fowler, published in Philadelphia and Cincinnati for a general readership, covering manhood, womanhood, and love through phrenological theory. The engravings are small black-and-white profile diagrams of heads, with numbered lines marking skull regions and one cutaway of a brain showing numbered faculty zones, useful for designers wanting Victorian scientific line-drawing diagrams.
