Let us catch up another illustration from the science of Botany, to show how Deduction may strengthen and sharpen an inductive result. The botanists say, that apple-tree blossoms are always five-petaled, because blossoms from a large number of apple-trees in various localities have been observed to have just five petals to the blossom; so far, they affirm inductively, and indeed securely; but they have also reached by means of another induction a much broader law of plant-life, namely, that outside-growers, when they have petaled flowers at all, always have them five-fold; now apple-trees are outside-growers; and therefore, deductively also, and conclusively beyond shadow of question, apple-tree blossoms are five-petaled. Political Economy is just as open to Deduction as it is to Induction, and the two continually are reaching each other the hands of economical reasoning, not always indeed pursuing each a separate and distinct path to the end, as in the botanical instance just adduced; because in practice the two processes mingle constantly, and neither is carried out in full and due form, since premises used by the mind are often dropped in the statement, and shortened forms of expression take the place of long-drawn-out formulas. But all good reasoning in Economics, as in all other sciences, is analyzable into one or other of these two processes, both based alike on the uniformities of Nature and the structure of the human mind. Deduction has not quite the same scope and certainty in Economics as in the Physical Sciences, because any one _may_ act contrary to the vastly probable action of many individuals; still, it is a safe and potent process in economics, since it may descend securely from the larger masses to the smaller, even though perchance the individual escape, because of the simplicity and universality and certainty of the impulses that lead men to exchange. John Bascom gives the reason well, why both Induction and Deduction have so firm a grasp upon this science: "_Between one dollar and two dollars a man has no choice, he must take the greater; between one day and two days of labor he must take the less; between the present and the future he must take the present. This is not a sphere of caprice, nor scarcely even of liberty; the actions themselves present no alternative, and, if an alternative giving an opportunity for choice does arise, it arises from some partial or individual impulse, from some one of those transitory and foreign influences, which, while rippling the surface, neither belong to nor affect the current of the stream._"