MEDICAL EXTRACTS: ON THE NATURE OF HEALTH, WITH PRACTICAL OBSERVATIONS: AND THE LAWS OF THE NERVOUS AND FIBROUS SYSTEMS. BY A FRIEND TO IMPROVEMENTS. VOL. II. A NEW EDITION. Homines ad deos in nullâ re propius accedunt, quam faluter hominibus dando. CICERO. LONDON, Printed for J. JOHNSON, St. Paul's Church-yard; and And fold by them, and DILLY in the Poultry; MURRAY, Fleet-ftreet ; то DR. DARWIN. PHYSICIANS often lament, that their patients will not purfue the directions given them; and indeed, when their fenfe is not perfuaded, it is no wonder they are tempted to follow their own fancies. It is prefumed, that thofe, who will be at the trouble to perufe the following pages, will fee abundant reafon for the injunctions frequently given them by scientific practitioners, respecting food, air, exercife, diverfions, &c. &c. and having acquired a knowledge of THE NATURE OF HEALTH, and THE LAWS OF THE ANIMAL OECONOMY, they will also be able to distinguish the Practitioner of modeft merit from the Quack, who wades in darkness, and tries his specific remedies one after another, until the patient recovers VOL. II. more more by accident, and the efforts of Nature, than any thing else, or can tell no tales. This part of the work, I am led to think, will be also amusing to the philofopher, who confiders the ftudy of the human frame a part, and the most interesting part, of natural history. It may prepare the student for the more careful study of your incomparable work *, which, had it appeared fooner, would have earlier enriched this vơlume, and the discoveries of Dr. JOHN BROWN would have been also attributed to you, as they were made previous to his, though not published to the world, as many of your friends can attest. I HAVE THE HONOUR TO BE, WITH THE HIGHEST RESPECT AND ESTEEM, &c. &c. * Zoonomia, or the Laws of Organic Life. Two Vols. Quarto, |