In 1835, he joined a fellow Quaker named Robert Foster on a trip to the United States, and while there wrote a series of letters that appeared in the Entomological Magazine in London under the running title of "Communications on the Natural History of North America".
ɪn wˈʌn θˈaʊzənd ˈeɪthˈʌndɹɪd θˈɜːɾi fˈaɪv, hiː dʒˈɔɪnd ɐ fˈɛloʊ kwˈeɪkɚ nˈeɪmd ɹˈɑːbɚt fˈɑːstɚɹ ˌɔn ɐ tɹˈɪp tə ðə juːnˈaɪɾᵻd stˈeɪts, ænd wˌaɪl ðɛɹ ɹˈoʊt ɐ sˈɪɹiz ʌv lˈɛɾɚz ðæt ɐpˈɪɹd ɪnðɪ ɛntˌɑːməlˈɑːdʒɪkəl mˌæɡɐzˈiːn ɪn lˈʌndən ˌʌndɚ ðə ɹˈʌnɪŋ tˈaɪɾəl ʌv "kəmjˌuːnɪkˈeɪʃənz ɔnðə nˈætʃɚɹəl hˈɪstɚɹi ʌv nˈɔːɹθ ɐmˈɛɹɪkə".