ɹˈɑːbɚt stˈɛfɛnsən ˈɔːlsoʊ ɹᵻpˈoːɹɾᵻd ɪn wˈʌn θˈaʊzənd ˈeɪthˈʌndɹɪd fˈoːɹɾi fˈoːɹ tə ðə tʃˈɛstɚ ænd hˈoʊlihˌɛd ɹˈeɪlweɪ ˌɔn ɐn ɛkstˈɛnsɪv sˈɪɹiz ʌv tˈɛsts hiː dɪvˈaɪzd fɚðə lˈaɪn, wˌɪtʃ wɜː kˈæɹid ˈaʊt ˌɔn hɪz bᵻhˈæf baɪ mˈɪstɚ dʒˈiː bˈɜːkli, ænd mˈɪstɚ dˈʌbəljˌuː.pˈiː. mˈɑːɹʃəl.
Robert Stephenson also reported in 1844 to the Chester and Holyhead railway on an extensive series of tests he devised for the line, which were carried out on his behalf by Mr G Berkley, and Mr W.P. Marshal.