Transcriber’s Notes Obvious typographical errors have been silently corrected. All other spelling and punctuation remains unchanged. Italics are represented thus _italic_. ESSAY ON THE EFFECTS OF IODINE, ETC. ETC. LONDON: PRINTED BY JAMES MOYES, GREVILLE STREET. ESSAY ON THE EFFECTS OF IODINE ON THE HUMAN CONSTITUTION; WITH PRACTICAL OBSERVATIONS ON ITS USE IN THE CURE OF BRONCHOCELE, SCROPHULA, AND THE TUBERCULOUS DISEASES OF THE CHEST AND ABDOMEN. BY W. GAIRDNER, M. D. LONDON: PRINTED FOR THOMAS AND GEORGE UNDERWOOD, 32, FLEET STREET. 1824. INTRODUCTION. The medicine which forms the subject of the following treatise has been so lately introduced into practice, that few Physicians are acquainted either with its properties, or with the manner of using it. Almost all have heard of its effects in discussing bronchocele; and some, rashly presuming that it cannot be a drug of great power, have prescribed it without giving themselves the trouble of making any inquiry into the manner of employing it, or the dangers to which its use is liable. I have thus seen more than one Physician seriously injured in his reputation; and I have seen many patients irrecoverably injured in their health by this subtle and powerful medicine.