PRELIMINARY VERSION: This is about 'deep' Christian Science - the full scope of the Science of Christ-healing discovered in 1866 by Mary Baker Eddy, which she developed and expanded over a span of 44 years. She is reported to have once said: "I am going to write a book that will change the world." This, she did indeed. By her dedication and achievements she became, one of the greatest scientific geniuses of her time. Her stature as a world-historic person reflects a number of pioneering achievements that she is widely honored for, which have uplifted the face of civilization in numerous respects. She is noted for her dedication to advancing the status of women; for ennobling Christianity with a scientific dimension; for reinstating its nearly lost element of Christ-healing; and for her discovering and founding of Christian Science. Yes, she did write a book that changed the world, a book of science, of spiritual divine Science. She is known today as the Discoverer and Founder of Christian Science, and the author of its textbook, Science and Health with Key to the Scriptures, which she had constantly revised and upgraded in the course of more than 400 editions of the book, keeping the book in line with her own scientific development over the space of its 35 years in her hands since its first publication in 1875. In celebrating the 150th Anniversary of her discovery of Christian Science in 1866, it is appropriate that the historic dimension of Mary Baker Eddy be enriched with a specific focus on the scientific aspects of her work. This is the purpose of this book. She has accomplished enormously on this front, far more than what society gives her credit for, most of which remains generally unknown. If a historian had asked her in her time what she had most wished for in her life, she might have answered that she had labored for 44 years to give to humanity the clearest sense possible of the "acme" of Christian Science., which means that all other accomplishments where subsequent to it and reflect it. This book reaches deep in to the details of her discoveries and her scientific work to make her discoveries accessible.