Mercurius Compilalitius: or, a Guide to the Practical Physician is the extravagant title of this three-hundred-year-old book written by Theoph Bonet available at the Osler Library for consultation. The binding is half ripped off due to its age. Its cover is hard and woody, with nothing written on it. It is of a dark brownish color with a tinge of red and the fore edge of this book is also of this same color. Only a few words are carved on the spine of the book. From far, it looks like a large brick.