dᵻspˈaɪt ðˈɪs, ðə pɹˈɑːsɛs wʌz nˌɑːt pˈɜːfɛkt: ɪt dɪdnˌɑːt ɹᵻpɹədˈuːs ɐ fˈʊl kˈʌlɚ pˈɪktʃɚ, ænd ʌntˈɪl wˈʌn θˈaʊzənd ˈeɪthˈʌndɹɪd sˈɛvənti fˈaɪv bˈɔɪz wɜːɹ ɛmplˈɔɪd tə kˈʌlɚɹ ɪnðə mˈæps pɹədˈuːst baɪ ðɪs mˈɛθəd.
Despite this, the process was not perfect: it did not reproduce a full colour picture, and until 1875 boys were employed to colour in the maps produced by this method.