Between the time of Bolus and Zosimos, the change took place that transformed this metallurgy into a Hermetic art.
bᵻtwˌiːn ðə tˈaɪm ʌv bˈoʊləs ænd zəsˈɪmoʊz, ðə tʃˈeɪndʒ tˈʊk plˈeɪs ðæt tɹænsfˈɔːɹmd ðɪs mɛtˈælɜːdʒi ˌɪntʊ ɐ hɜːmˈɛɾɪk ˈɑːɹt.