THE EARLIEST KNOWN ILLUSTRATION OF THE USE O 

 THE DIVINING ROD, APPLIED TO THE FINDING OF 



PRECIOUS METALS. (Prom G. Agricola's treatise on 

 Mining, published in 1557.) 



At the top a man is seen cutting the rod from the tree; at the 

 left the "Dowser" is seen prospecting with the rod; beneath 

 are two onlookers pointing to the find of metals, and two miners 

 examining the metal dug out. 



AN ILLUSTRATION FROM AN OLD FRENCH BOOK ON "JACOB'S ROD," 



published at Paris in the year 1693. 



The four figures show: (a) holding the rod and prospecting; (6) the man has 

 just found water, which is springing up from the ground; (c) has discovered a 

 hidden treasure; (<?) discovering a dead body by aid of the rod. 



