Jacob's rod : a translation from the French of a rare and curious work, A.D. 1693, on the art of finding springs, mines and minerals by means of the hazel rod / To which is appended researches, with proofs of the existence of a more certain and far higher faculty, with clear and ample instructions for using it.

Licence: Public Domain Mark

Credit: Jacob's rod : a translation from the French of a rare and curious work, A.D. 1693, on the art of finding springs, mines and minerals by means of the hazel rod / To which is appended researches, with proofs of the existence of a more certain and far higher faculty, with clear and ample instructions for using it. Source: Wellcome Collection.