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O.54

ted to the predetermined number, and the proportion of its members that are P having been ascertained, in his inferring that approximately the same proportion of Ms will, most likely, be P throughout experience, or would be so if general conditions were to remain unchanged. I call this sort of inference 'Quantitative Probation,' or the inference I term the Second Order of Inductive Probabation is Approximative Induction. It is either of the Qualitative or of the Quantitative family, according as the weight of the instances can only be estimated or can be ascertained by measurement of by counting. We need only describe

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