Note 9 — Introduction: The Subject, Method and Scope of this Inquiry

A genealogy is nothing else but a synoptic chart of a number of connected relations of kinship. Its value as an instrument of research consists in that it allows the investigator to put questions which he formulates to himself in abstracto, but can put concretely to the native informant. As a document, its value consists in that it gives a number of authenticated data, presented in their natural grouping. A synoptic chart of magic fulfils the same function. As an instrument of research, I have used it in order to ascertain, for instance, the ideas about the nature of magical power. With a chart before me, I could easily and conveniently go over one item after the other, and note down the relevant practices and beliefs contained in each of them. The answer to my abstract problem could then be obtained by drawing a general inference from all the cases, and the procedure is illustrated in Chapters XVII and XVIII.9 I cannot enter further into the discussion of this question, which would need further distinctions, such as between a chart of concrete, actual data, such as is a genealogy, and a chart summarising the outlines of a custom or belief, as a chart of a magical system would be.