[Pramāṇa](https://indike.org/pramana/) › [Indian literature](https://indike.org/pramana/in) › [Medicine](https://indike.org/pramana/in.med) › [Alchemy and Iatrochemistry](https://indike.org/pramana/in.med.rasa) › [Metallurgical alchemy and transmutation into gold](https://indike.org/pramana/in.med.rasa.dhatuvada) › [Rasādhyāya](https://indike.org/pramana/in.med.rasa.dhatuvada.rasadhyaya) › [English (machine translation)](https://indike.org/pramana/in.med.rasa.dhatuvada.rasadhyaya~en-mt) › 242\_286 # Rasadhyaya 242\_286 English (machine translation) 242\_286 - **Language:** English ### [242\_286](https://indike.org/pramana/in.med.rasa.dhatuvada.rasadhyaya~en-mt.242_286) Having melted one part of pure copper in a crucible, then four parts of realgar, likewise four parts of killed lead, and likewise four parts of blue vitriol: / having thus powdered these twelve parts, casting them little by little into the copper, one should melt it until only the copper remains. / This is declared as the lead amalgam. / He states the result of the blue vitriol and lead amalgams: with the words 'of the metals exalted by amalgam', etc. Having made powder of the metal of all four amalgams, each amalgam / should be digested sequentially in mercury to eight times \[the quantity\] by the method of mercury mentioned previously. Such is the rule for preparing amalgams. / Thus the fourth, the lead amalgam. - [Previous: 242\_285](https://indike.org/pramana/in.med.rasa.dhatuvada.rasadhyaya~en-mt.242_285) - [Next: 242\_289](https://indike.org/pramana/in.med.rasa.dhatuvada.rasadhyaya~en-mt.242_289) --- Source: [https://indike.org/pramana/in.med.rasa.dhatuvada.rasadhyaya~en-mt.242_286](https://indike.org/pramana/in.med.rasa.dhatuvada.rasadhyaya~en-mt.242_286) · Pramāṇa