रसार्णव (शैव रस-तन्त्र - प्राचीन भारतीय खनिज रसायन, धातुवाद एवं रस-चिकित्सा सटीक)

'? Look at 'ष' in 'तुष': curved back, vertical bar, crossbar. Now look at the letter after 'क': It has a repha on top: र्. The base letter has: a vertical on right, and on left... wait, it's 'ष'! Wait, is it "तुषकषीग्निना"? "तुषकर्षाग्निना"? Yes! "तुषक"+"र्"+"षा" or "तुषक"+"र्"+"ष"? Wait, "कर्ष" = karṣa! "तुषकषग्निना" or "तुषकर्षाग्निना"! Wait, look at the aa-matra: between that letter and 'ग्नि', there is NO aa-matra! Wait, is there an aa-matra? No, the repha is on 'षा'? Wait, look at: त ु = तु ष = ष क = क र् = repha ष = ष ा = aa-matra? ग्नि = ग्नि न ा = ना Wait, "तुषकर्षाग्निना"? In Ayurveda/Rasashastra: "तुषकर्षाग्निना" (fire of chaff and karṣa / dry cowdung?) or "तुषकणग्निना" (tuṣa-kaṇa-agninā = fire of chaff particles)? Wait, how is 'ण' written in this book? Look at line 108: