Albertus Magnus, a Dominican friar, is known to have written works such as the Book of Minerals where he observed and commented on the operations and theories of alchemical authorities like Hermes and Democritus and unnamed alchemists of his time.
ælbˈɜːɾəs mˈæɡnəs, ɐ dəmˈɪnɪkən fɹˈaɪɚ, ɪz nˈoʊn tə hæv ɹˈɪʔn̩ wˈɜːks sˈʌtʃ ɐz ðə bˈʊk ʌv mˈɪnɚɹəlz wˌɛɹ hiː əbzˈɜːvd ænd kˈɑːmɛntᵻd ɔnðɪ ˌɑːpɚɹˈeɪʃənz ænd θˈiəɹiz ʌv ælkˈɛmɪkəl ɐθˈɔːɹɪɾiz lˈaɪk hˈɜːmiːz ænd dˈɛməkɹˌɪɾəs ænd ʌnnˈeɪmd ˈælkɪmˌɪsts ʌv hɪz tˈaɪm.