text_original: When he had to do with very hard minerals, he employed & mortar of flint, or rather of agate.
text_transcription: WHEN HE HAD TO DO WITH VERY HARD MINERALS HE EMPLOYED A MORTAR OF FLINT OR RATHER OF AGATE
phonemes: wˌɛn hiː hædtə dˈuː wɪð vˈɛɹi hˈɑːɹd mˈɪnɚɹəlz, hiː ɛmplˈɔɪd ænd mˈɔːɹɾɚɹ ʌv flˈɪnt, ɔːɹ ɹˈæðɚɹ ʌv ˈæɡeɪt.