What does a grade mean?
A historical and critical study · Research draft · 9 October 2026
Money worries in the repertory: tracing the source evidence
Remedies associated with anxiety about money, poverty, livelihood and financial loss.
Ambra grisea: Before Ambergris Became a Remedy
Roger van Zandvoort · Historical materia medica
Digitalis purpurea: From Foxglove to Homeopathic Remedy
By Roger van Zandvoort
Arnica montana: From Mountain Herb to Homeopathic Remedy
By Roger van Zandvoort
When a Symptom Cluster Becomes a Source-Link Problem
WHEN A SYMPTOM CLUSTER BECOMES A SOURCE-LINK PROBLEM
Rhododendron aureum: Before Rhod. Became a Remedy
Roger van Zandvoort
Camphora: Before the Trade Drug Became a Remedy
By Roger van Zandvoort
Thuja occidentalis: Before It Became a Remedy
By Roger van Zandvoort
Why T. F. Allen Printed Some Symptoms as Symptom Clusters
Why Curare Can No Longer Be Maintained as One Reliable Remedy
By Roger van Zandvoort
Homeopathic Methodology
By Roger van Zandvoort