Four treatises which illustrate one of the most original minds of the Renaissance at the height of his powers. Born near Einsiedeln in 1493, Philip Theophrastus von Hohenheim, who later called himself Paracelsus, was the son of a physician. His thirst for knowledge led him to study arts in Vienna, then medicine in Italy, but the instruction left him disillusioned. He had learned to see nature with his own eyes, undiluted by the teachings of books. He was a rebellious spirit, hard-headed and stubborn, who travelled all over Europe and the British Isles to practice medicine, study local diseases, and learn from any source he could, humble as it might be. In these years of wanderings, Paracelsus developed his own system of medicine and a philosophy of theology all his own. Though he wrote a great many books that covered a wide range of subjects, only a few of his works were ever published in his lifetime. When he died in Salzburg in 1541, one of the most forceful personalities of the Renaissance died with him. Here are collected four treatises which illustrate four different aspects of Paracelsus' work. The first gives a passionate justification of his character, activities, and views, and gives a picture of the man and his basic ideas. The second treatise is a study of the diseases of miners, with whom Paracelsus had spent a great deal of time. Then follows a treatise on the psychology and psychiatry of Paracelsus. Written at a time when mental diseases were beginning to be studied and treated by physicians, this pioneering essay anticipates a number of modern views. The last essay, entitled "A Book on Nymphs, Sylphs, Pygmies, and Salamanders, and on the Other Spirits," is a fanciful and poetic treatment of paganism and Greek mythology, as well as a good sample of Paracelsus' philosophy and theology. Together these essays show one of the most original minds of the Renaissance at the height of his powers.

Despite his fame Paracelsus remains an illusive character. As this volume points out it is somewhat of a paradox that the fascination with Paracelsus and his ideas has remained so widespread when it is born in mind that it is far from clear what exactly he contributed to medicine and natural philosophy. But perhaps it is exactly this enigma which through the ages has made Paracelsus so attractive to such a variety of people who all want to claim him as an advocate for their particular ideas. The first section of this book deals with the historiography surrounding Paracelsus and Paracelsianism and points to the need of reclaiming the man and his ideas in their proper historical context. A further two sections are concerned with the different religious, social and political implications of Paracelsianism and its medical and natural philosophical significance respectively.

During his tenure as the Regius Professor of Medicine at Oxford from 1905-1919, Sir William Osler amassed a considerable library on the history of medicine and science. A Canadian native, Osler had studied at McGill University and decided to leave his collection of 7,600 items to its Faculty of Medicine. A catalogue, the Bibliotheca Osleriana, was compiled - a labour of love that took ten years to complete and involved W.W. Francis, R.H. Hill, and Archibald Malloch. Osler himself laid down the broad outlines of the catalogue and wrote many of the annotations.