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70
rims of both are to be luted with diclay. Heat is to be applied "till a straw placed on its top gets burnt.
Pātālayantra?
In it one pot having holes in paindi is put over another pot. Having placed it into a pit, fire is given to it from above. Sulphur, orpiment, etc. are purified by this process by putting them into the pot. 3
Damaruyantra
Put the mouth of an earthen pot upside down (inverted) on the mouth of another earthen pot. Close the joint in between them with the layer of clay and cloth. The shape of this apparatus becomes like that of Damaru. For this reason it is called Damaruyantra. It is useful in making ash of mercury."
1. “Jārayet bālukāyantre khoto bhavati tatkşaņāt (12/19);
Jārayet balukāyantre bhāvitam gaṁdhaṁ punaḥ / (15-87) 2 Prāguktabalukayantre tailaṁ dattvā vicakṣaṇaḥ / (16/81), Raşārnava Sarasāṁ gūdhavaktrām mặdvastrāmgulaghanāvștām / Sositam kācakalasin trşu bhāgeşu pūrayet // Bhānde vitastigambhire vālukā spratisthā / Tadbhāņde pūrayet tạbhirayabhiravaguņthayet // Bhāndavaktraṁ manikayā sandhi limpenmşdā pacet/ Cullyāṁ trṇasya cādāhānmānikāprşthavartiinaḥ 11. Etaddhi balukāyamtraṁ tadyantram (avanāśrayam // , Rasaratna Samuccaya, 9/33-35.
See History of Chemistry, p. 190. 2. Suvarna-Raupya-Siddhi-śāstra-Ch. 3. 6; 4. 14; 5.35; 7. 23; 10. 28;
11. 41; 12. 9.. 3. Grāhyam tatphalatailam vā ynatre pātālsamjñake I
Rasārnava. 12. 21. ; (kha) Pālālayantre tattailaṁ gphạiyāt tāmra
bhājane, Ibid. 12. 59. 4. Suvarņa-Raupya-Siddhi-Sāstra.
Ch. 9. 56; 9. 66; 11. 1.6; 11.21; 12. 5. 5. Yantrasthalupari sthalim myabiga datva nirundhayet/
Yantram damarukākhyam tadrasabhasmarte hitam/Rasaratna Samuccayam, Ch, 9. 54.
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