The following excerpts are from Chapter 7 of The Manual of Hygiene - Father and Son by M.A. Horn.(This chapter is chock full of the basics taught by high school gym teachers during sex-ed class. It would have been skipped entirely, along with the related chapter on Male Reproductive Organs, had it not been for one little nugget tucked away at the end of the chapter...)
A Woman's Reproductive or Sex Organs
While the chief function of the female breasts is to provide milk to a nursing child, they are definitely one of the lesser sex organs. The nipples contain erectile tissue, just as do the clitoris and vagina and a pleasurable sensation is experienced by most women when they are kissed or otherwise handled. As a rule, cold frigid women have small, undeveloped breasts, while those who are warm and well-sexed have well developed ones.
