ɐmˌʌŋ ðə nˈoʊɾəbəl pɹˈɪnts ɑːɹ nˈuːmɚɹəs ɹˌeɪdɪoʊlˈɛɹiənz, wˌɪtʃ hˈiːkəl hˈɛlpt tə pˈɑːpjʊlɚɹˌaɪz ɐmˌʌŋ ˈæmətʃɚ mˈaɪkɹəskˌɑːpɪsts; æt lˈiːst wˈʌn ɛɡzˈæmpəl ɪz fˈaʊnd ɪn ˈɔːlmoʊst ˈɛvɹi sˈɛt ʌv tˈɛn.
Among the notable prints are numerous radiolarians, which Haeckel helped to popularize among amateur microscopists; at least one example is found in almost every set of 10.