text_original: His method was to heat it in a gold tube, with saltpetre. "Hw diamond was converted into caibonic acid gas, which combined with the potash from the saltpetre, and by the evolution of which the quantity of catbon,.in k given weight of diamond, might be estimated.
text_transcription: HIS METHOD WAS TO HEAT IT IN A GOLD TUBE WITH SALTPETRE THE DIAMOND WAS CONVERTED INTO CARBONIC ACID GAS WHICH COMBINED WITH THE POTASH FROM THE SALTPETRE AND BY THE EVOLUTION OF WHICH THE QUANTITY OF CARBON IN A GIVEN WEIGHT OF DIAMOND MIGHT BE ESTIMATED
phonemes: hɪz mˈɛθəd wʌz tə hˈiːt ɪɾ ɪn ɐ ɡˈoʊld tˈuːb, wɪð sˈɔltpɛɾɚ. "ˌeɪtʃdˈʌbəljˌuː dˈaɪəmənd wʌz kənvˈɜːɾᵻd ˌɪntʊ keɪbˈɑːnɪk ˈæsɪd ɡˈæs, wˌɪtʃ kəmbˈaɪnd wɪððə pˈɑːɾæʃ fɹʌmðə sˈɔltpɛɾɚ, ænd baɪ ðɪ ˌɛvəlˈuːʃən ʌvwˈɪtʃ ðə kwˈɔntᵻɾi ʌv kˈætbən,.ɪn kˈeɪ ɡˈɪvən wˈeɪt ʌv dˈaɪəmənd, mˌaɪt biː ˈɛstᵻmˌeɪɾᵻd.