Finally, the alchemists practiced their art: they actively experimented with chemicals and made observations and theories about how the universe operated.
fˈaɪnəli, ðɪ ˈælkɪmˌɪsts pɹˈæktɪst ðɛɹ ˈɑːɹt: ðeɪ ˈæktɪvli ɛkspˈɛɹɪməntᵻd wɪð kˈɛmɪkəlz ænd mˌeɪd ɑːbzɚvˈeɪʃənz ænd θˈiəɹiz ɐbˌaʊt hˌaʊ ðə jˈuːnɪvˌɜːs ˈɑːpɚɹˌeɪɾᵻd.