It would be a profitless task to review the alleged data of Astrology or Phrenology or Palmistry, except for the illustrations which they readily yield of the nature of the conceptions and of the logic which command a certain popular interest and acceptance. The interest in these notions is, as Mr. Lang argues about ghosts and rappings and bogles, in how they come to be believed, rather than in how much or how little they chance to be true. It must be remembered also that our present interest is in the occult factors of these composite systems; they each contain other factors,--in part incorporations of vague and distorted scientific truths, in part dogmatic overstatement of results of observation, which, if reduced to the proportions warranted by definite evidence, dissolve into insignificance or intangibility, in part plausible or specious argumentation, and in still greater part mere fanciful assertion. And if we proceed to examine the professed evidence for the facts and laws and principles (_sit venia verbis_) that pervade Astrology or Phrenology or Palmistry or dream-interpretation, or beliefs of that ilk, we find the flimsiest kind of texture, that will hardly bear examination, and holds together only so long as it is kept secluded from the light of day. Far-fetched analogy, baseless assertion, the uncritical assimilation of popular superstitions, a great deal of prophecy after the event (it is wonderful how clearly the astrologer finds the indications of Napoleon's career in his horoscope, or the phrenologist reads them in the Napoleonic cranial protuberances), much fanciful elaboration of detail, ringing the variations on a sufficiently complex and non-demonstrable proposition, cultivating a convenient vagueness of expression, together with an apologetic skill in providing for and explaining exceptions, the courage to ignore failure and the shrewdness to profit by coincidences and half-assimilated smatterings of science, and with it all an insensibility to the moral and intellectual demands of the logical decalogue,--and you have the skeleton, which, clothed with one flesh, becomes Astrology, and with another Phrenology, and with another Palmistry or Solar Biology or Descriptive Mentality or what not. Such pseudo-sciences thrive upon that widespread and intense craving for practical guidance of our individual affairs, which is not satisfied with judicious applications of general principles, with due consideration of the probabilities and uncertainties of human life, but demands an impossible and precise revelation. Not all that passes for, and in a way is knowledge, is or is likely soon to become scientific; and when a peasant parades in an academic gown the result is likely to be a caricature. VII