ɪnðə fˈiːld ʌv bˈɑːtəni, kˈɔltənbˌɑːx wʌzðɪ ˈɔːθɚɹ ʌv flˈoːɹə dˈɛs ˈɑːtʃənɚ bˈɛkənz flˈoːɹə ʌvðɪ ˈɑːtʃən bˈeɪsən, ɐ bˈʊk ɪnwˌɪtʃ hiː aɪdˈɛntᵻfˌaɪd ˈɔːlmoʊst ˈeɪthˈʌndɹɪd fˈænɚɹˌɑːɡæmz.
In the field of botany, Kaltenbach was the author of Flora des Aachener Beckens (Flora of the Aachen basin), a book in which he identified almost 800 phanerogams.