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As should appear from its slight bulk, the essay is of the nature of a cursory survey rather than an exhaustive inquiry with full documentation. The few references given and the authorities cited in the course of the argu ment are accordingly not to be taken as an inclusivepresentation of the materials on which the inquiry rests. It will also be remarked that where authoritative docu ments are cited the citation is general and extensive rather than specific and detailed. Wherever detailed references are given they will be found to bear on specific facts brought into the argument by way of illustrative detail.
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