(Magner 173) When John Dalton's atomic theory of matter superseded Descartes' philosophy of infinite divisibility at the beginning of the 19th century, preformationism was struck a further blow.
(Magner 173) Ketika teori atom John Dalton tentang materi menggantikan filosofi Descartes tentang keterbelahan tanpa batas pada awal abad ke-19, preformationisme mendapat pukulan lebih lanjut.