text_original: Undoubtedly it was due to a difference in their composition which had an influence upon their external aspect, a difference which had not yet been observed. And this difference he discovered by a searching examination of these crystals.
text_transcription: UNDOUBTEDLY IT WAS DUE TO A DIFFERENCE IN THEIR COMPOSITION WHICH HAD AN INFLUENCE UPON THEIR EXTERNAL ASPECT A DIFFERENCE WHICH HAD NOT YET BEEN OBSERVED AND THIS DIFFERENCE HE DISCOVERED BY A SEARCHING EXAMINATION OF THESE CRYSTALS
phonemes: ʌndˈaʊɾᵻdli ɪt wʌz dˈuː tʊ ɐ dˈɪfɹəns ɪn ðɛɹ kˌɑːmpəzˈɪʃən wˌɪtʃ hæd ɐn ˈɪnfluːəns əpˌɑːn ðɛɹ ɛkstˈɜːnəl ˈæspɛkt, ɐ dˈɪfɹəns wˌɪtʃ hæd nˌɑːt jˈɛt bˌɪn əbzˈɜːvd. ænd ðɪs dˈɪfɹəns hiː dɪskˈʌvɚd baɪ ɐ sˈɜːtʃɪŋ ɛɡzˌæmᵻnˈeɪʃən ʌv ðiːz kɹˈɪstəlz.