1. Quoted by Mersch: Pourquoi etudier 1. Homeopathie p. 268.
2. The test drug-provings of the O.O. & L Society, a reproving of Belladonna;Howard P,1906
3. Compare also Appendix A: The reproving of the homœopathic materia medica from the standpoint of a specialist;Bellow,1906
4. Die Arzneiprüfung am gesunden Menschen;Hugo;Deutsche medizinische Wochenschrift,1906