The MS. notes of his first course of lectures are now in the British Museum. They formed a part of the library of Dr. (afterwards Sir Hans) Sloane, which was acquired under the terms of his will by the nation in 1754. For a time the book was well known and extracts were made from it, then it disappeared and for many years it was mourned as irretrievably lost. But in 1876 it was found again amongst some duplicate printed books which had been set aside, and in the following year it was restored to its place in the Manuscript Department. The notes were reproduced by an autotype process, at the instigation of Sir E. H. Sieveking, and under the supervision of a Committee of the Royal College of Physicians. This facsimile reproduction was published in 1886 with a transcript by Mr. Scott, and an interesting introduction from the pen of Dr. Norman Moore. The original notes are written upon both sides of about a hundred pages of foolscap, which had been reduced to a uniform size of six inches by eight, though the creases on the paper show that they have been further folded so as to occupy a space of about eight inches by two. These leaves have been carefully bound together in leather which presents some pretensions to elegance, but it is clear that the pages were left loose for some years after they were written. There seems to be no doubt that Harvey used the volume in its present form whilst he was lecturing, for three small threads of twine have been attached by sealing wax to the inner side of the cover so that additional notes could be slipped in as they were required. It must be assumed that Harvey did this himself, for he wrote so badly and the notes are so full of abbreviations, interlineations, and alterations, as to render them useless to any one but the author.