This section is from the book "Dental Medicine. A Manual Of Dental Materia Medica And Therapeutics", by Ferdinand J. S. Gorgas. Also available from Amazon: Dental Medicine.
In order to impress the memory and facilitate investigation, it is necessary that medicinal substances should be classified according to their similarity of action on the animal economy, as follows:
1. Neurotics, or those which have a special action on and modify the functions of the nervous system. To this group belong:
2. Eccritics, or those which have a special action on the secretions. To this group belong:
3. Hemetics, or those which modify the blood. To this group belong:
4. Topical Remedies. To this group belong: