Neuheusius spoke of the divining rod as a marvel from the bounteous hands of Nature, and exhorted men to use it in the search for mineral wealth and concealed treasure. Enchanted with this insignificant-looking instrument, he exclaimed: "What shall I say now concerning the Divine Rod, which is but a simple hazel twig, and yet possesses the power of divination in the discovery of metals, be that power derived from mutual sympathy, from some secret astral influence, or from some still more powerful source. Let us take courage and use this salutary rod, so that, after having withdrawn the metals from the abode of the dead, we may seek in the metals themselves some such faculty for divination as we find in the hazel." Rudolph Glauber, who made many experiments with the rod, had this to say of it: "Metallic veins can also be discovered by means of the hazel rod. It is used for that purpose, and I speak after long experience. Melt the metals under a certain constellation, and make a ball of them pierced through the middle; thrust into the hole thus formed a young sprig of hazel, of the same year, with no branches. Carry this rod straight in front of you over the places where metals are believed to be, and when the rod dips and the ball inclines towards the soil, you may rest assured that metal lies beneath. _And as this method is based on natural law, it should undoubtedly be used in preference to any other_." Egidius Gustman, supposedly a Rosicrucian friar, and author of a work entitled _La Revelation de la Divine Majeste_, devoted a chapter to the study of the question "whether hazel rods may be used without sin in the search for metals." He reached the conclusion that there could be nothing unchristian in their employment for the discovery of gold and silver, provided neither words, ceremonies, nor enchantments be called into requisition, and that it be done "in the fear and under the eyes of God." M. de Vallemont quotes as his final authority the Abbé Gallet, Grand Penitentiary of the Church of Carpentras. He considers that the Abbé's high position in the church, and his deep knowledge of physics and mathematics, should lend great weight to his opinion concerning the divining rod. He therefore requests a mutual friend to put to the Abbé this question, "Is not the inclination of the rod due to sleight of hand or something in which the Devil may play a part?" The Abbé returns a long reply in Latin, which de Vallemont is pleased to translate and print in his book. It opens thus: "Monsieur l'Abbé Gallet declares in his own hand that the rod turns in the direction of water and of metals; that he has used it several times with admirable success in order to find water-courses and hidden treasure, and that he is far from agreeing with those who maintain that there is in it any trickery or diabolical influence."