Mankind is (sure) that rod divine,
For to the wealthiest (ever) they incline."
The earliest use made of the divining rod by the miners was for the discovery of the lode. So late as three years ago (1850), the process has been tried. The method of procedure was to cut the twig of an hazel or apple-tree of twelve months' growth, into a forked shape, and to hold this by both hands in a peculiar way, walking across the land until the twig bent, which was taken as an indication of the locality of the lode. The person who generally practises this divination boasts himself to be the seventh son of a seventh son. The twig of hazel bends in his hands to the conviction of the miners that ore is present; but then the peculiar manner in which the twig is held, bringing muscular action to bear upon it, accounts for its gradual deflection, and the circumstance of the strata walked over always containing ore gives a further credit to the process of divination.
The vulgar notion still prevalent in the north of England of the hazel's tendency to a vein of lead ore, seam or stratum of coal, etc., seems to be a vestige of this rod divination.
The virgula divina or baculus divinatorius is a forked branch in the form of a Y, cut off an hazel stick, by means whereof people have pretended to discover mines, springs, etc., underground. The method of using it is this: the person who bears it, walking very slowly over the places where he suspects mines or springs may be, the effluvia exhaling from the metals, or vapor from the water impregnating the wood, makes it dip or decline, which is the sign of a discovery.
In the Living Library or Historical Meditations we read: "No man can tell why forked sticks of hazill (rather than sticks of other trees growing upon the very same places) are fit to shew the places where the veins of gold and silver are." See Lilly's History of his Life and Times, for a curious experiment (which he confesses, however, to have failed), to discover hidden treasure by the hazel rod.
In the Gentleman's Magazine, for February, 1752, xxii, 77, we read: "M. Linnæus, when he was upon his voyage to Scania, hearing his secretary highly extol the virtues of his divining rod, was willing to convince himself of its insufficiency, and for that purpose concealed a purse of one hundred ducats under a ranunculus which grew by itself in a meadow and bid the secretary find it if he could. The wand discovered nothing, and M. Linnæus's mark was soon trampled down by the company who were present; so that when M. Linnæus went to finish the experiment by fetching the gold himself, he was utterly at a loss where to seek it. The man with the wand assisted him and pronounced that it could not lie the way they were going, but quite the contrary; so he pursued the direction of his wand and actually dug out the gold. M. Linnæus adds, that such another experiment would make a proselyte of him." We read in the same book for November, 1751, xxi, 507: "So early as Agricola, the divining rod was in much request, and has obtained great credit for its discovery where to dig for metals and springs of water; for some years past its reputation has been on the decline, but lately it has been revived by an ingenious gentleman who, from numerous experiments, hath good reason to believe its effects to be more than imagination. He says that hazel and willow rods, he has by experience found, will actually answer, with all persons in a good state of health, if they are used with moderation and at some distance of time, and after meals, when the operator is in good spirits. The hazel, willow and elm are all attracted by springs of water. Some persons have the virtue intermittently; the rod in their hands will attract one half hour and repel the next. The rod is attracted by all metals, coals, amber and limestone, but with different degrees of strength. The best rods are those from the hazel or nut tree, as they are pliant and tough and cut in the winter months. A shoot that terminates equally forked is to be met with—two single ones of a length and size may be tied together by a thread and will answer as well as the other."
In the supplement to the Athenian Oracle, p. 234, we read that "the experiment of a hazel's tendency 'to a vein' of lead ore is limited to St. John Baptist's Eve, and that with an hazel of that same year's growth."
There is a treatise in French entitled, La Phisique Occulte ou Traite de la Baguette Divinatoire, et de son utilite pour la decouverte des sources d'Eau, des Minieres, de Tresors caches, des Voleurs et des Meurtriers fugitifs: par M. L. L. de Vallemont pretre et docteur en theologie; 12 mo., Amsterdam, 1693. 464 pages.