Dr. Mayo discusses the 1831 case of Elizabeth Moffat, an 18 year old that took Unguentom Lytcee by accident, and then seemed to pass into a state of double consciousness. Ms. Moffat's normal state was dull and quiet, her other state was a of extreme excitement. The excited state and the dull state remembered nothing of what the other state had recently learned. Ms. Moffat eventually returned to her normal state full time. Dr. Mayo did not believe her to be faking the excited state.
Dr. Skae discusses a case involving an individual in the legal profession who suffers from a case of double consciousness. The patient alternates days of great health and vigor with days of a state between hypochondria and mental alienation. On the poor health days the patient surrounds himself with Scriptures and Psalms. The patient has also suggested suicide when in this state. On his days of good health the patient has no recollection of these bad days, but can remember his previous good day.
Dr. Ward discusses the case of 13 year old Mary Parker. Mary suffered from the measles at age 7, and epileptic attacks started at age 12. Various remedies, such as bleeding out and leeches are tried on Mary, none of which work. Mary's ailments increase to include headache, pain and pressure on her left side. She eventually begins to alternate between delirium and a sound state of mind. Mary's symptoms disappear with the onset of menses. It was concluded that Mary's symptoms were connected to epilepsy, but were hysterical in origin.