Several Editions speak more conveniently in praise of a book than any other word, reviewer or publisher could utter. Dr Carroll Dunham, after graduating himself from the Columbia College, New York, made the acquaintance of Dr Constantine Hering, one of the greatest physicians ever born, who became too helpful to him as well as generous and genial friend. In the meantime, he continued his study under Dr Boenninghausen with a desire to know everything within the enclosure of the school of Homoeopathy. Subsequently, he gratified himself with Doctorate from College of Physicians and Surgeons of New York. But did he stop there? No. He wanted to drink the cup of knowledge upto its last drop. He began to study under many of the Great Physicians and Specialists of Europe for many years. Dr Dunham delivered his knowledge in this book ‘Lectures on Materia Medica’, an immortal part of Homoeopathic literature, an indispensable library aid to the practicing Homoepathic practitioners. The lectures contained in these volumes were delivered by Dr Dunham while he occupied the chair of Materia Medica in the New York Homoepathic Medical College. They have been edited from his note-books, practically verbatim and are the ripe fruits of his thought and experience -- in his own latest words, too valuable to be lost.