A table, setting forth the maner of that great philosopher the Lord Chancelor Bacons [electronic resource] : searching for mettals by making addits through the lowest level of hills or mountains, and conveying aire into the innermost parts of their center by pipe and bellows; as well as by art to mollifie the hardest stone, without the tedious way and inestimable charge of sinking aery shafts; and is now intended to be put in practice by his meniall servant Thomas Bushell, on Hingston-Downe, according to his lordhsips command, and the approbation of that great mineralist , Sir Francis Godolphine; with the demonstrative resons of each particular to the lords of the fee, and proprietors of Hingston-Downe is as followeth.