It is impossible to review this book without considering its two companions, the first on pathologic physiology and the second on diagnosis. It is equally impossible to review the trilogy without reflecting on the author and on his peculiar aptitude for writing a complete textbook of medicine in the form he has selected.
Professor Krehl was born in 1861, and became a doctor of medicine when he was 25 years old. Subsequently he acquired an admirable medical training: first as Privat Dozent in Leipzig, then as professor of medicine at Jena—receiving the honor when he was only 31 years old—then as Professor at Marburg, Greifswald, Tübingen, Strassburg and finally Heidelberg. With an experience of such breadth, it is no wonder that Sir William Osler remarked of him in a preface to Hewlitt's second edition of the translation of the "Pathological Physiology" published in 1907, "The author has had the advantage