About a quarter of a century ago, Boston, the city of modified Puritans and keen business thrift, evolved a new religion. Modern Boston, however, being nothing if not "scientific," the new religion tipped its wings with the new time, and soared aloft in the name of "Christian Science." In a world not quite converted to this "science," facts sometimes fall behind assertions. But the sect of Christian Science now claims to number in its fold a million sheep. The "mother church," of course, is in Boston; but daughter churches of every age and size are budding and blooming throughout the earth. At headquarters Christian Science has its official weekly organ, its official monthly magazine, and its official publishing house. The cult has issued innumerable books, but specially the multifarious editions of _Science and Health_, the chief work of the adored "mother" and "founder" of Christian Science, Mrs. Mary Baker G. Eddy. As the latest edition of this sacred book is always the best, and as the holy author carefully recommends it as such to all the faithful--whatever other editions they possess--its very high price, under copyright,[1] as compared with undivine books, has rendered it a magnificent source of income. Then, as the average fee for blessing a disciple of Christian Science with a dozen lessons in "metaphysics" and "healing" has been three hundred dollars,[2] a grateful providence through long years, has not only provided food and raiment for "Mother Eddy," but a rich abundance, too, of such worldly goods as should adorn and stimulate perfect piety, not excepting the whitest of diamonds, as symbols of purity, for herself and the elect of her household. Why not? Her devotees are strict adherents of Scripture--always as she interprets it for them--and she believes, for all the text will yield, that "the laborer is worthy of his hire." Now, apart from the name and the church of Christian Science, there are many people in Boston and its universal radiations--very intelligent and honest people, too--who utterly discard Mrs. Eddy and her teachings, yet hold the general doctrine on which she speculates--the now well-known doctrine that mind governs matter, and that the soul can cure the body of disease. The teaching of these people may simply be termed "mental healing," though they say also "mental science," sometimes "metaphysics" and comprehensively "the new thought."