“I had a very pretty woman friend who was taking treatment from my husband. What I endured during her visits is beyond my powers to describe. I said to myself: ‘She is now taking off her blouse and now her petticoat. He is now examining, looking at her bosom, and now she lifts herself upon the examination table, she stretches her limbs apart....’ I suffered hellish torments. I was convinced that my husband could not withstand this woman’s charms and would kiss her. I had a serious quarrel with him; I quarreled with my friend, who turned from me with indignation. Our marriage relations grew worse on that account. I tortured my husband so that he had to allow me to watch through a carefully hidden peep-hole what was going on in the consultation room. In that manner I convinced myself that my husband was physically true to me. But even though he swore a thousand times that the women did not excite him in the least I could not believe him. I stuck to one thing which I harped on daily: ‘_Give up your specialty._’ Years thus passed in quarrels and dispute. I have now a married daughter of my own and I thought to myself that with advancing age my condition would change. But not at all! It grows worse and I transfer now my jealousy also to my son-in-law, I am jealous for my daughter. Fortunately, she has no real reason to feel jealous and laughs at me.... “I am also jealous of my daughter. I would like to preserve her love for myself only and I begrudge her husband. Although she made an excellent match, I was not satisfied and treated my son-in-law very unfairly. I was unhappy over it but could not help it. I have consulted already the most famous specialists, have been for six weeks under hypnotic treatment by Prof. X. I have already kept away from my husband for three months at a stretch,—nothing has helped.” That is the sufferer’s history. What is the meaning of this jealousy? The root of this jealousy is a non-conscious homosexuality. She is jealous of her woman friend because she herself is in love with the friend. She puts herself in the rôle of the man, the physician, and concludes that in his position she could not resist the temptation. She imagines herself in the man’s place; she scrutinizes every woman with hungry looks. The peep-hole in the consultation room serves on the one hand the purpose of calming down her jealousy and of giving the poor husband a few quiet hours; on the other hand it enables her to participate in everything that is taking place and to gratify her craving as _voyeuse_. This control is her daily homosexual excitant, the means through which she rouses the flames of her passion only to still them afterwards upon her husband. After the explanation was reached there was a marked improvement in her condition. The woman saw that her love for the daughter was homosexual and that this was the reason why she was so jealous of her son-in-law.