The short paper on the ANATOMY of THOMAS PARR appears in the Philosophical Transactions in English; but it stands there as a translation; and having now translated so much myself, I even thought it would be well to translate that also, and so it was achieved. The LETTERS, though frequently quoted, have never appeared in English before. They will be found both highly interesting and important. To render them was a light and pleasant task.--In a word, the English reader is now presented with an entirely new translation of the writings of William Harvey; everything of our illustrious countryman worthy of publication that has come down to us, being here included.[1] The reader will perceive that I have abstained from annotation and commentary in the course of my labour. The purpose of the Council of the Sydenham Society, as I understood it, was to give the Works of William Harvey in English now, as he himself gave them in Latin two centuries ago. Entirely approving of this intention, I felt that anything like corrections of statements and opinions, which could so readily have been made under the lights of modern physiology, would have been impertinencies, and I therefore abstained from them. To have carried out and completed the history of Harvey’s two grand subjects, would also have been easy; but this would have been almost as obviously out of place as commentary, and the inclination towards such an agreeable undertaking was also resisted. It appeared, nevertheless, that the Works of our great physiological discoverer might be advantageously prefaced by some account of his Life and Writings. One great motive with me, indeed, for undertaking the office of Editor of the Works of Harvey was, that I might thus find a fitting opportunity for writing his life, a task which, in other circumstances than those that now surround me, it had still been a cherished purpose with me to perform. The Life of Harvey, by one who had maintained a familiarity with anatomy and physiology, had always seemed to me a desideratum in our medical literature.