"The explanation of their ORIGIN is deemed thoroughly unsatisfactory-utterly insufficient to explain the incipient, infinitesimal beginnings of structures which are of utility only when they are considerably developed."
"Haren jatorriaren azalpena erabat ez-asegarritzat jotzen da, hau da, uste da inola ere ez dela nahikoa, aski garaturik daudenean bestetan emendioko ez diren egituren hasiera infinitesimal hasberriak azaltzeko".