The book is formatted to reflect 274 Plants, 132 Minerals, 64 Animals, 18 Nosodes, 10 Fungi and 2 Imponderables.This mirrors the proportion of kingdoms and groupings in the homeopathic materia medica. The plant kingdom is by far the largest, followed by minerals and then animals.The extensive Source and Substance section includes the latest scientific names, as well as accurate and up-to-date placement in the appropriate kingdoms or groupings. Characteristic features are described that enable prescribing on, and comparison with, materia medica ' thus clarifying and highlighting the importance of certain symptoms.From the earliest times in homeopathy, connections between symptoms, and qualities of substances have been noted and incorporated in remedy pictures. This has allowed for a refinement in 'source-based prescribing,' which most fully acknowledges and utilises such connections.The Materia Medica is subdivided into 4 Sections, which are Mind, Generals, Sensations and Locals. The sections contain individualising characteristics and key symptoms. They are derived from both clinical and proving symptoms for a balanced approach.Repertory rubrics are up-to-date, being derived from the Synthesis Repertory in the Radar OPUS program. Additional information is obtained from a wide variety of international Materia Medicas.A completely new feature, the PLUS GROUP consists of several distinctive characteristics or symptoms that define the remedy. Generally, the most distinct quality is listed first. With each added symptom, the possibility of this being the desired remedy increases.For example, the first line plus the second line makes the remedy more defined. Add the third line to the other two and that makes it even more likely that this remedy is correct. The more lines of the group are added 'plus' by 'plus', the more confident one can be that the remedy fits the patient.