It will thus appear that the plan of the _Janua linguarum reserata_ of Comenius, the book that was destined to make his name known throughout the world, was not wholly original with the Moravian reformer. The name and to some extent the plan of the book had been suggested by the publication of the Jesuit. The first edition of Comenius’ _Janua_ appeared in 1631.[36] In the numerous subsequent editions the author made important changes and additions. In subject-matter, the _Janua_ comprehends the elements of all the sciences and arts. There are a hundred chapter headings with a thousand Latin sentences and their German equivalents arranged in parallel columns. The subjects treated cover a wide range—from the origin of the world to the mind and its faculties. The first chapter is an introduction, in which the reader is saluted, and informed that learning consists in this: to know distinctions and names of things. He is assured that he will find explained in this little book the whole world and the Latin language. If he should learn four pages of it by rote, he would find his eyes opened to all the liberal arts. The second chapter treats of the creation of the world, the third of the elements, and the fourth of the firmament. In chapters five to thirteen inclusive, fire, meteors, water, earth, stones, metals, trees, fruits, herbs, and shrubs are treated. Animals occupy the next five chapters; and man—his body, external members, internal members, qualities and accidents of the body, ulcers and wounds, external and internal senses, the intellect, affections, and the will—the eleven following chapters. Nineteen chapters are given to the mechanic arts. Twenty-one chapters deal with the house and its parts, marriage, the family, civic and state economy. Twelve chapters are assigned to grammar, dialectics, rhetoric, arithmetic, geometry, and the other branches of knowledge, describing briefly what they are; and ethics gets twelve chapters, a chapter being devoted to each of the twelve virtues. In the four succeeding chapters, games, death, burial, and the providence of God and the angels are treated. Chapter ninety-nine treats of the end of the world; and in the one-hundredth chapter Comenius gives some farewell advice, and takes leave of his reader.