Rasadhyaya 153_159

153_159

And in the previously mentioned four-legged iron mortar, having cast the mercury that has digested iron as well as / powder of iron-lustre amalgam in a sixty-fourth part, one should grind it with the previously mentioned blue vitriol sauce. / And one should kindle a gentle fire underneath. / When that powder of iron-lustre cast in the front is digested, [one adds] that same measure of iron[-lustre amalgam] again. / And thus, if the iron-lustre amalgam eight times [the weight of] mercury is digested, / then the mercury becomes yellow. / Then, for the redness of mercury, one should calcine-and-digest gold amalgam in the manner to be stated. / Thus ends the third [process], the calcination-digestion of iron-lustre amalgam for mercury that has digested iron. / And he himself will explain the nature of the amalgam below.