Part 2 - Purification of Lead

First process.

Lead is purified, if it is made into leaves, smeared with powdered nirgundi roots rubbed with milk of arka, and then dried, melted, and immersed into the juice of nirgundi, the process being performed for seven times.

Second process.

Leaves of lead are purified, if they are smeared with a paste made of the milk of snuhi and the ashes of as many as available of the following, and then heated for seven times, after having been smeared with the paste each time:—haridra, green dhanya seeds, kokilaksha, kutharika, amalaki, chincha, red-rose, small brahmi, and jira.

Third process.

Bell-metal, brass, lead, and tin are purified by heating and immersing them into the juice of nirgundi for seven times.

Fourth process.

Powdered root of nirgundi, barahi-kanda, and naridra are to be thrown into molten lead which is then to be immersed into the juice of nirgundi for three times (after having been melted each time). Lead, thus purified, does not give rise to hysteria, boils, etc.

Fifth process.

Lead as well as tin is purified, if it is melted for three times and immersed each time through an earthen pot full of pores, into the milk of arka.

Sixth process.

Lead as well as tin is purified, if it is immersed for three times in each of the following, after having been melted each time:—oil, butter-milk, kanji, decoction of kulattha, and especially, milk of arka plant.

Seventh process.

Lead is purified, if it is melted for seven times in an iron pot by a fire made of khadira wood and immersed each time either in the decoction of triphala, or in the juice of kanya, or in the urine of elephant.