Malacarne in Torino in 1784 described a double aorta, and Hommelius mentions an analogous case.

The following case is quite an interesting anatomic anomaly: A woman since infancy had difficulty in swallowing, which was augmented at the epoch of menstruation and after exercise; bleeding relieved her momentarily, but the difficulty always returned.

At last deglutition became impossible and the patient died of malnutrition.

A necropsy revealed the presence of the subclavicular artery passing between the tracheal artery and the esophagus, compressing this latter tube and opposing the passage of food.
Anomalies of the Breasts .-- The first of the anomalies of the generative apparatus to be discussed, although not distinctly belonging under this head, will be those of the mammae.
Amazia, or complete absence of the breast, is seldom seen.

Pilcher describes an individual who passed for a female, but who was really a male, in whom the breasts were absolutely wanting.