A "repertory" is a listing of symptoms and those substances that have been found to cause and cure each symptom. For instance, one would use a repertory to look for a compilation of those medicines that are good for headaches that occur in the front of the head in the morning (in the "head" section, under the subsection "pain," under the further subsection "frontal pain worse in the morning"). After reviewing a sick person's various symptoms in the repertory, one can then obtain more detailed information about each of the possible medicines by looking them up in a materia medica. A repertory and a materia medica complement each other.
Studying the homeopathic repertories in a group can be fun. It is common for new students and even experienced homeopaths to have difficulty finding certain symptoms anywhere in the repertory. Getting a group of people to find a symptom can be a game, the winner being the first person to find it. It's also interesting for a person to give the group a list of symptoms as an exercise to see how many people find all the symptoms. These games can be a playful and effective way to learn.
Below are some great repertories. Although it is ESSENTIAL to have several repertories, it is also VITAL for serious students and certainly for practitioners to have one of the expert system homeopathic software programs. See what is available by clicking HERE.
Synthesis, by Frederik Schroyens, MD (This is the most popular and respected modern repertory in print form.)
Homeopathic Clinical Repertory, Robin Murphy, ND (This repertory does not give reference to the sources of its symptoms, but some people like that it lists symptoms alphabetically rather than the model developed by Kent and others. Murphy also has some sections that no one repertory has, including toxicological exposures and modern pathology terminology)
For people interested in some of Dana Ullman's earliest writings, you can read his undergraduate thesis at U.C. Berkeley in 1975 on "Human Learning." Honor students at UC Berkeley who wish to have an independent major (and who do not want to have a regular generic major) are required to write a thesis. This paper on "Human Learning" provides insights into Dana's early synthetic and integrative thinking. The beginning of the article and its definition of "science" may be of special interest. Also, Dana creatively chose to use his own invented pronouns to replace the masculine emphasis of "he," "him," and "his," with "che," "chis," and "cher."