Several cases, in which insanity was preceded by terrifying dreams, have come under my observation. In one of them a lady dreamed that she had committed murder, under circumstances of great atrocity. She cut up the dead body, but could not, with all her efforts, divide the head, which resisted her blows, with an axe and other instruments. Finally she filled the nose, eyes, and mouth with gunpowder, and applied a match. Instead of exploding, smoke issued slowly from the orifices of the skull, and was resolved into a human form, which turned out to be that of a police officer sent to arrest her. She was imprisoned, tried, and sentenced to execution, by being drowned in a lake of melted sulphur. While the preparations were being made for the punishment she awoke. She related the particulars of her dream to several friends, but it apparently made no great impression on her mind. The next night she dreamed of somewhat similar circumstances, and for several nights subsequently. On the sixth day, without any premonition, she attempted to kill herself by plunging a pair of scissors into her throat, and since that time to her death, which took place a few months subsequently, was constantly insane.

In this case there was no direct analogy between the character of her dream and the type of insanity which ensued. It cannot, therefore, be said that the dream produced the mental aberration. On the contrary, the dream was in all probability the first evidence of deranged cerebral action,—a condition which subsequently became developed into positive insanity.

The following case is similar to the foregoing in its general features:

A gentleman who had been unfortunate in some business speculations, shortly afterward became insane. Previous to this event he was troubled with frightful dreams, which gave him a great deal of annoyance, and frequently caused him to awake in terror. One of them occurred several times, and was of the following character. He dreamed that he was engaged to be married to a lady of beauty and wealth, and who was, moreover, possessed of great musical talent. One evening, as he in his dream was paying her a visit, she placed herself at the piano and began to sing. He remarked that he did not admire the piece of music she was singing, and asked her to sing something else. She indignantly refused. Angry words followed, and in the midst of the dispute she drew a dagger from her bosom and stabbed herself to the heart. As he rushed forward, horror-struck, to her assistance, her friends entered the room, and found him with the dagger in his hand. He was accused of murdering the lady, and, notwithstanding his protestations of innocence, was tried, found guilty, and sentenced to be hung. He always awoke at the point when preparations were being made for his execution.

A dream may make such a strong impression on the mind as to subsequently constitute the essential feature of the insane condition. This point has already been elucidated to some extent in the preceding pages. The following cases, however, are from my own records of practice.

A gentleman awoke in the middle of the night, and, calling his wife, told her he had dreamed that a large fortune had been left him by a miner in California. He then went to sleep again, but in the morning again repeated the dream to his wife, and said that “there might be something in it.” She laughed, and remarked that she “hoped it might prove true.” About the time the California steamer was expected, the gentleman was observed to become very anxious and excited, and was continually talking of his expected fortune. At last the steamer arrived. He then began asking the postman for letters from California, went several times a day to the post-office to make like inquiries, and finally went aboard the steamer and questioned the officers on the same subject. Then he was sure the letter had miscarried, and would sit for hours in the most profound melancholy. He was now recognized by his family as a monomaniac, and strenuous efforts were made to cure him of his delusion, but they were unsuccessful; and although now apparently sane on other subjects, he still holds the erroneous idea which was first given him in his dream of several years ago.

A young lady was brought to me in July, 1868, who had been rendered insane by a dream which took place a few months before I saw her. She went to bed one night in good health and spirits, though somewhat fatigued in consequence of having skated a good deal the previous afternoon. In the morning she told her mother she had committed the “unpardonable sin,” and that there was consequently no hope of her salvation. She based her idea on a dream she had had, in which an angel appeared to her, and sorrowfully informed her of her sin and her destiny. When asked to tell what her sin was, she refused to do so, saying it was too shocking and atrocious to talk about. She kept to her delusion, and soon settled into a sort of melancholic stupor, from which it was impossible entirely to rouse her. Under the use of arsenic, and the acid phosphate of lime of Prof. Horsford, she gradually recovered her reason.

The manner in which prodromic dreams are excited is very simple. The ancients and some modern writers have regarded them as prophetic; but the true explanation does not require so severe a tax on our powers of belief. In the previous chapter, it was shown that very slight impressions made upon the senses during sleep are exaggerated by the partially awakened brain. The first evidence of approaching paralysis may be a very minute degree of numbness—so minute that the brain when awake and engaged with the busy thoughts of active life fails to appreciate it. During sleep, however, the brain is quiescent, till some exciting cause sets it in uncontrollable action, and dreaming results. Such a cause may be the incipient numbness of a limb. A dream of its being turned into stone, or cut off, or violently struck, is the consequence. The disease goes on developing, and soon makes its presence unmistakable.

This explanation applies mutatis mutandis to all prodromic dreams. They are invariably based upon actual sensations, unless we except the rare cases which are simply coincidences.

Symptomatic Dreams.—Morbid dreams are so generally met with in the course of disease, especially in that of the brain and nervous system, that I never examine a patient without questioning him closely on this point. The information thus obtained is always valuable, and sometimes constitutes the most important feature of the investigation.