________________
so
The process of killing copper
.
(1). The Nepalese copper is killed with the juice of capparis sepairaria., (2) Copper is to be killed with sulphur. Make it equal to cinnabar. The
leaf of copper is to be smeared with the juice of citrus medica by rubbing it.
The Rasārņava describes the process of the purification of copper in this way that it can be purified; it is put into the juice of Nirgundi by smearing it with the milk of Sehuda, salt, Kșāra and amlas (acid). (1) According the Rasaratna Samuccaya of Vāgbhat the powder of copper, .. yavaksāra (a kind of oxide) and geru (red ochre) are to be rubbed
together in the juice of lemon and melted on fire. Next it should be quenched into the butter water and the cowdung water seven times. In this way copper will be purified. 4
(2) Make a copper-leaf and rub it in the juice of lemon and smear Saindhav
salt on it. Next heat it in fire and quench it in kāñji (a kind of old
sour water). Repeat the process eight times, copper will be purifeid.5 (3) Heat the copper-leaf and quench it into the juice of Nirguņqi eight times. It will get purificd.
Incineration of Copper .(1) Rub pure mercury and pure sulphur in the juice of lemon by taking
equal portion of each. Next smear the mixture on the leaf of copper
.
ca
1. Ibid., Ch. I.1. II. 1 2. Ibid., Dh. 1. 19... 3. Snuhyarkakşıralavaṇa kşārāmälaparilepitam | Tâmrapatram
nirguņdı-rasamadhye tu dhālayet //, Rasārņava 7/106. 4. Tamram kşārāmlasamyuktam drāvitam dattagairikam /
Pamcadosavinirmuktam bhasmayogyam hi jayate 1],
RS. 5/49. 5. Tāmranirmalapatrāņi liptvā nimbhambusiṁdunā /
Dhatvā Sauvirakaşepadviśudhyatyaştavārataḥ //
Ibid. 5/50. 6. Niambbambupatuliptāni tāpitānaştārakam 1
Vißudhyamtyarkaparram nirguņdyārasamajjianāt // Ibid. 5/51.
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