text_original: His analysis of corundum and sapphire, and his observations on the affinity between magnesia and silica, are valuable, and led to considerable improve  ments in the method of analysis.
text_transcription: HIS ANALYSIS OF CHORUNDUM AND SAPPHIRE AND HIS OBSERVATIONS ON THE AFFINITY BETWEEN MAGNESIA AND SILICA ARE VALUABLE AND LED TO CONSIDERABLE IMPROVEMENTS IN THE METHOD OF ANALYSIS
phonemes: hɪz ɐnˈæləsˌɪs ʌv kɔːɹˈʌndəm ænd sˈæfaɪɚ, ænd hɪz ɑːbzɚvˈeɪʃənz ɔnðɪ ɐfˈɪnᵻɾi bᵻtwˌiːn mæɡnˈiːʒə ænd sˈɪlɪkə, ɑːɹ vˈæljuːəbəl, ænd lˈɛd tə kənsˈɪdɚɹəbəl ɪmpɹˈuːv mˈɛnts ɪnðə mˈɛθəd ʌv ɐnˈæləsˌɪs.