Homoeopathy is strictly a scientific system of medicine. It is based upon
a law of nature—“Similia similibus curantur,” or the law that remedies
will cure symptoms and diseases similar to those which they will cause
when taken by healthy persons. It is wonderful with what care, skill,
and perseverance the new Materia Medica has been developed, mostly by
intelligent physicians, commencing with Hahnemann, taking the different
remedies in varying doses, and carefully and patiently watching the
symptoms that follow, and writing them down day after day; and then, when
similar symptoms occur in case of disease, giving the remedies and
carefully watching and writing down the results. Allopathic physicians, as
a rule, have not the slightest conception of the vast amount of patient and
persevering labor in this direction which has been done by physicians as
well educated as they are, and most of whom have graduated in the same
schools, who have devoted their lives to this work. Are not these facts
worthy of the consideration of every physician in the world who desires the
highest good of his fellow men?.
Based on the information presented in this passage, you can infer that Materia
Medica most likely refers to