The Massachusetts Metaphysical College was founded in 1881 by Mary Baker Eddy in Boston, Massachusetts, to teach her school of Christian Science metaphysical healing that she named Christian Science. Eddy records in the preface of Science and Health with Key to the Scriptures, her chief work on Scientific Christian healing, p. xi, that the college was opened, "under the seal of the Commonwealth, of Massachusetts, a law relative to colleges having been passed which enabled her to get this institution chartered for medical purposes." and it was located at 571 Columbus Avenue, Boston. USA. After teaching for almost seven years, Eddy closed this college in 1889 in order to devote herself to the revision of her book, Science and Health, but retained her charter and reopened the College in 1899 as an auxiliary to her Church. the Christian Science textbook The College's founder, Mary Baker Eddy, in the preface to her book, Science and Health with Key to the Scriptures, which is the fundamental doctrinal Textbook on Christian Science, outlines a short history of the College as follows: In 1881, she (Mary Baker Eddy) opened the Massachusetts Metaphysical College in Boston, under the seal of the Commonwealth, a law relative to colleges having been passed, which enabled her to get this institution chartered for medical purposes. No charters were granted to Christian Scientists for such institutions after 1883, and up to that date, hers was the only College of this character which had been established in the United States, where Christian Science was first introduced. During seven years over four thousand students were taught by the author in this College. Meanwhile she was pastor of the first established Church of Christ, Scientist; President of the first Christian Scientist Association, convening monthly; publisher of her own works; and (for a portion of this time) sole editor and publisher of the Christian Science Journal, the first periodical issued by Christian Scientists. She closed her College, October 29, 1889, in the height of its prosperity with a deep-lying conviction that the next two years of her life should be given to the preparation of the revision of SCIENCE AND HEALTH, which was published in 1891. She retained her charter, and as its President, reopened the College in 1899 as auxiliary to her church. Mark Twain in his book Christian Science Mark Twain, in his critical and humorous book Christian Science, which was published