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Rh Sometimes it is accepted as a postulate of later reasoning, its origins are forgotten, it becomes a new stock of descent, its issue unite with other strains, and persisting permeate the law. You may call the process one of analogy or of logic or of philosophy as you please. Its essence in any event is the derivation of a consequence from a rule or a principle or a precedent which, accepted as a datum, contains implicitly within itself the germ of the conclusion. In all this, I do not use the word philosophy in any strict or formal sense. The method tapers down from the syllogism at one end to mere analogy at the other. Sometimes the extension of a precedent goes to the limit of its logic. Sometimes it does not go so far. Sometimes by a process of analogy it is carried even farther. That is a tool which no system of jurisprudence has been able to discard. A rule which has worked well in one field, or which, in any event, is there whether its workings have been revealed or not, is carried over into another. Instances of such a process I group Rh