A History of Hindu Chemistry from the Earliest Times to the Middle of the Sixteenth Century A.D. v1.c18.s7.11

v1.c18.s7.11

Among the metals present in this mixture, iron is often found and, as its presence is extremely undesirable when the meterials are placed on the crucible for melting, it is generally got rid of at this stage. Formerly this was done by picking up the separate bits of iron by fine pincers, but now-a-days the magnet is almost universally used for the purpose.