Fourth Dialogue Summary and Analysis

The Chevalier de Mirvel enters at the beginning of the Fourth Dialogue. Eugenie is shocked that Dolmance and Madame de Saint-Ange want to include him in her education. Dolmance uses the Chevalier to demonstrate ejaculation to Eugenie. Masturbating the Chevalier, he explains the process to Eugenie, who is terrified by the enormity of the penis. Dolmance assures her that she can withstand its immensity. To Madam's mind, a woman must begin her sexual exploits with the largest penis possible and work her way up to as many simultaneous penises as possible. She has a standing wager to reward any person who can engage her in a perversion she has not known before.

After the Chevalier orgasms, he proceeds to have sex with his sister while Eugenie penetrates Dolmance with a dildo. At the end of the Fourth Dialogue, Dolmance...