"Light a room with spermaceti, anoint your face with the same substance, and you will seem to all beholders to have the head of a sperm whale upon your shoulders." "When you would have men in the house seem to be without heads: take yellow brimstone with oil, and put it in a lamp and light it, and set it in the midst amongst men, and you shall see a wonder." These are two out of a large mass of facts which form a compact body of ancestral wisdom. They lie before us in a venerable volume, whose grave frontispiece is adorned with the portraitures of Alexis, Albertus Magnus, Dr. Reade, Raymond Lully, Dr. Harvey, Lord Bacon, and Dr. John Wecker. John Wecker, Doctor in Physic, first compiled the book, and Dr. R. Read augmented and enlarged it. "A like work never before was in the English tongue." It was printed in the year 1661, for Simon Miller, at the Starre in St. Paul's Church Yard, and it is entitled, "Eighteen Books of the Secrets of Art and Nature, being the Summe and Substance of Naturall Philosophy, Methodically Digested." The book is one of considerable size and pretension, written by wise doctors in the good old time, two hundred years ago. Let us not be conceited and harp only on the strings provided to our fingers in the nineteenth century. For a few minutes, at least, it will not do us harm to get a little scientific information from our ancestors. We shall glean, therefore, some random facts out of the harvest-field of Doctors Mead and Wecker, selecting, of course, most characteristic, those which our forefathers may call exclusively their own. The volume opens with scientific information on the subject of Angels and Devils, including, of course, the fact that "Witches kill children, and divers cattle, which we find by various experience, and by relation of others that are worthy to be believed. But if you will say they are mere delusions of the Devil, whereby he makes foolish women mad that are entangled by him, that they believe they do those things which neither they nor the devil can do; if we can so avoid it, we may as well deny any thing else, be it never so evident. "--If you deny that, you may deny any thing--is a phrase not yet dead. Applied two hundred years ago to the experience concerning witches, it has been industriously employed to the present day, and is employed still on behalf of a great many fresh delusions. As for the gentleman, whom truth is said to shame, he claimed his distinct chapter in the minds of old physicians, because, as the book before us has it, he "can cause many diseases, of the reasons whereof we are ignorant. Also he can do this, or that; being subtile, he can easily pass through all parts of the body, which he can bind, pull back, or torment otherwise."