1. Descartes, René, Les passions de l'âme. Paris. 1649*.
2. Lower, Letter to Mr. Boyle, Jan. 18 th., 1661; reprinted by Victor Horsley (siehe Nr. 173).
3. Boyle, Robert, Some considerations touching the usefulness of experimental naturall philosophy, proposed in familiar discourses to a friend, by way of invitation to the study of it. Oxford 1663.
4. Descartes, Renati, Tractatus de homine et de formatione foetus. Amstelodami. 1677.
5. Redi, Fr., Osservazioni intorno agli animali viventi che si trovano negli animali viventi. Firenze 1684 (siehe auch Nr. 17.)