Besides this work, there is a number of other books of Basil Valentine's, printed during the first half of the sixteenth century, that are well known and copies of which may be found in most of the important libraries. The United States Surgeon General's Library at Washington contains not a few of the works on medical subjects, and the New York Academy of Medicine Library has some valuable editions of certain of his works. Some of his other well-known books, each of which is a good-sized octavo volume, bear the following descriptive titles (I give them in English, though as they are usually found, they are in Latin, sixteenth-century translations of the original German): "The World in Miniature: or, The Mystery of the World and of Human Medical Science," published at Mayburg, 1609; "The Chemical Apocalypse: or, The Manifestation of Artificial Chemical Compounds," published in Erfurt in 1624; "A Chemico-Philosophic Treatise Concerning Things Natural and Preternatural, Especially Relating to the Metals and the Minerals," published at Frankfurt in 1676; "Haliography: or, The Science of Salts: A Treatise on the Preparation, Use, and Chemical Properties of All the Mineral, Animal, and Vegetable Salts," published at Bologna in 1644; "The Twelve Keys of Philosophy," Leipsic, 1630. These are of interest to the chemist and physicist rather than to the physician, and it is as a Maker of Medicine that we are concerned with Valentine here. The great attention aroused in Basil Valentine's work at the Renaissance period can be best realized from the number of manuscript copies and their wide distribution. His books were not all printed at one place, but, on the contrary, in different portions of Europe. The original edition of "The Triumphal Chariot of Antimony" was published in Leipsic in the early part of the sixteenth century. The first editions of the other books, however, appeared at places so distant from Leipsic as Amsterdam and Bologna, while various cities of Germany, as Erfurt and Frankfurt, claim the original editions of still other works. Many of the manuscript copies still exist in various libraries in Europe; and while there is no doubt that some unimportant additions to the supposed works of Basil Valentine have come from the attribution to him of scientific treatises of other German writers, the style and the method of the principal works mentioned is entirely too similar not to have been the fruit of a single mind and that possessed of a distinct investigating genius, setting it far above any of its contemporaries in scientific speculation and observation.