text_original: Subsequent investigation confirmed the advantage of such standardization, and the large post offices which handle 75 per cent of the nation's mail, have now been brought under such improved control that the benefit which such intelligent methods, properly carried out, should naturally develop, has been abundantly shown.
text_transcription: SUBSEQUENT INVESTIGATION CONFIRMED THE ADVANTAGE OF SUCH STANDARDIZATION AND THE LARGE POST OFFICES WHICH HANDLE SEVENTY FIVE PER CENT OF THE NATION'S MAIL HAVE NOW BEEN BROUGHT UNDER SUCH IMPROVED CONTROL THAT THE BENEFIT WHICH SUCH INTELLIGENT METHODS PROPERLY CARRIED OUT SHOULD NATURALLY DEVELOP HAS BEEN ABUNDANTLY SHOWN
phonemes: sˈʌbsᵻkwənt ɪnvˌɛstɪɡˈeɪʃən kənfˈɜːmd ðɪ ɐdvˈæntɪdʒ ʌv sˈʌtʃ stˌændɚdᵻzˈeɪʃən, ænd ðə lˈɑːɹdʒ pˈoʊst ˈɑːfɪsᵻz wˌɪtʃ hˈændəl sˈɛvənti fˈaɪv pɚ sˈɛnt ʌvðə nˈeɪʃənz mˈeɪl, hæv nˈaʊ bˌɪn bɹˈɔːt ˌʌndɚ sˈʌtʃ ɪmpɹˈuːvd kəntɹˈoʊl ðætðə bˈɛnɪfˌɪt wˌɪtʃ sˈʌtʃ ɪntˈɛlɪdʒənt mˈɛθədz, pɹˈɑːpɚli kˈæɹid ˈaʊt, ʃˌʊd nˈætʃɚɹəli dɪvˈɛləp, hˈæzbiːn ɐbˈʌndəntli ʃˈoʊn.