You are to understand, that, in mining districts, a superstition prevails among the people, that some are gifted with an occult power of detecting the proximity of veins of metal, and of underground springs of water. In Cornwall, they hold that about one in forty possesses this faculty. The mode, of exercising it is very simple. They cut a hazel twig that forks naturally into two equal branches; and having stripped the leaves off, they cut the stump of the twig, to the length of three or four inches, and each branch to the length of a foot or something less: for the end of a branch is meant to be held in each hand, in such a manner that the stump of the twig may project straight forwards. The position is this: the elbows are bent, the forearms, and hands advanced, the knuckles turned downwards, the ends of the branches come out between the thumbs and roots of the forefingers, the hands are supinated, the inner side of each is turned towards its fellow, as they are held a few inches apart. The mystic operator, thus armed, walks over the ground he intends exploring, with the full expectation, that, when he passes over a vein of metal, or underground spring of water, the hazel fork will move spontaneously in his hands, the point or stump rising or falling as the case may be. This hazel fork is the DIVINING ROD. The hazel has the honour of being preferred, because it divides into nearly equal branches at angles the nearest equal. Then, assuming that there is something in this provincial superstition, four questions present themselves to us for examination. Does the divining fork really move of itself in the hands of the operator, and not through motion communicated to it by the intentional or unintentional action of the muscles of his hands or arms? What relation has the person of the operator to the motion observed in the divining rod? What is the nature of the influence to which the person of the operator serves as a conductor? Finally, what is the thing divined? the proximity of veins of metal or of running water? what or what not? Then, let me at once premise, that upon the last point I have no information to offer. The uses to which the divining fork may be turned, are yet to be learned. But I think I shall be able to satisfy you, that the hazel fork in some hands, and in certain localities, held as I have described, actually moves spontaneously, and that the intervention of the human body is necessary to its motion; and that it serves as a conductor to an influence, which is either electricity, or something either combined with electricity, or very much resembling that principle in some of its habitudes.