hɪz sˈɪstəm hæd ᵻlˈɛvən ɡɹˈeɪdz ʌv ˈænɪməl, fɹʌm hˈaɪɪst pətˈɛnʃəl tə lˈoʊɪst, ɛkspɹˈɛst ɪn ðɛɹ fˈɔːɹm æt bˈɜːθ: ðə hˈaɪɪst ɡˈeɪv lˈaɪv bˈɜːθ tə hˈɑːt ænd wˈɛt kɹˈiːtʃɚz, ðə lˈoʊɪst lˈeɪd kˈoʊld, dɹˈaɪ mˈɪnɚɹəllˈaɪk ˈɛɡz.
His system had eleven grades of animal, from highest potential to lowest, expressed in their form at birth: the highest gave live birth to hot and wet creatures, the lowest laid cold, dry mineral-like eggs.