The dreams of those both blind and deaf are especially instructive. Many of Laura Bridgman's dreams have been recorded; and an unpublished manuscript by Dr. G. Stanley Hall places at my service a valuable account of her sleep and dreams. Sight and hearing were as absent from her dreams as they were from the dark and silent world which alone she knew. The tactual-motor sensations, by which she communicated with her fellow-beings, and through which almost all her intellectual food reached her, also formed her mainstay in dreams. This accounts for the suddenness and fright with which she often waked from her dreams; she is perchance dreaming of an animal, which to us would first make itself seen or heard, but to her is present only when it touches and startles her--for she lacks any anticipatory sense. Language has become so all-important a factor in civilized life, that it naturally is frequently represented in dreams. We not only dream of speaking and being spoken to, but we actually innervate the appropriate muscles and talk in our sleep; this Laura Bridgman also did. "Her sleep seemed almost never undisturbed by dreams. Again and again she would suddenly talk a few words or letters with her fingers, too rapidly and too imperfectly to be intelligible (just as other people utter incoherent words and inarticulate sounds in sleep), but apparently never making a sentence."[19] So, too, all the people who enter into her dreams talk with their fingers. This habit had already presented itself at the age of twelve, four years after her first lesson in the alphabet. "I do not dream to talk with mouth; I dream to talk with fingers." No prettier illustration could be given of the way in which her fancy built upon her real experiences, than the fact recorded by Charles Dickens, that on picking up her doll he found across its eyes a green band such as she herself wore. The organic sensations originating in the viscera, though often prominently represented in dreams of normal persons, seemed especially prominent in her dreams. She tells of feeling her blood rush about, and of her heart beating fast when suddenly waking, much frightened, from a distressing dream. One such dream she describes as "hard, heavy, and thick;" terms which, though to us glaringly inappropriate in reference to so fairy-like a structure as a dream, form an accurate description in the language of her own realistic senses. In short, her dreams are accurately modeled upon the experiences of her waking life, reproducing in detail all the peculiarities of thought and action which a very special education had impressed upon her curious mind.