Materia Medica Pura (2 Volumes)

By Samuel Hahnemann

The raw data of homeopathy — Hahnemann's meticulous records of what each medicinal substance produced when given to healthy volunteers, symptom by symptom, in his own voice. Sixty-odd remedies are documented with a patience that is startling to read. This is where the provings tradition begins, and every later materia medica is downstream of it.