Key-Notes to the Materia Medica
by Henry N. Guernsey • 1817–1885
Compact leading characteristics designed to turn the prescriber's attention toward the right remedy.
About Henry N. Guernsey
Henry Newell Guernsey, MD (1817–1885) was an American homeopathic physician and professor of materia medica at Hahnemann Medical College of Philadelphia. His teaching emphasized the characteristic features that make a medicine recognizable in practice.
He began preparing this practical volume late in life; his son, Joseph C. Guernsey, reviewed the manuscripts and completed the work after his death.
About Key-Notes to the Materia Medica
Key-Notes to the Materia Medica was published in 1887 from Guernsey's lectures and manuscripts. Its stated aim was not to reproduce every symptom, but to give the outline and leading characteristics that direct further study and prescribing.
The entries are concise and clinically oriented. They highlight peculiar symptoms, modalities, and combinations that help distinguish a remedy without pretending to replace the full proving record.
This makes Guernsey useful at the moment of differentiation: broad enough to suggest a remedy, but short enough to scan while comparing several candidates.
Best for
- Rapid review of leading remedy characteristics
- Finding peculiar symptoms and modalities
- Differentiating a short list of candidate remedies
- Students moving from repertory results to materia medica
Frequently asked questions
What are Guernsey's Key-Notes?
They are concise outlines of the characteristic symptoms and clinical distinctions of the principal remedies, developed from Guernsey's teaching and manuscripts.
Is this a complete record of every proving symptom?
No. Guernsey explicitly aimed to present leading characteristics that point toward a medicine; a full proving source is still needed for exhaustive study.
Who edited the book?
Joseph C. Guernsey reviewed and completed his father's manuscript after Henry N. Guernsey's death. The book was published in Philadelphia in 1887.
All remedies in this book
193 remedies — jump to a letter or scroll the list.