A whole-seeing criminologist must know what it means for a man to be a full-fledged Camorrist or Mafiausist. Also, why the lower and lowest grades of such as Russian, Slav and Magyar immigrants are so easily induced by hyphenates to ride rough shod. True, the mostly American-made criminal is all too common; yet had not America allowed immigrants to root in her social soil their hangover of hurts, close-corporation bigotry, and instinctive hatred of organized social control, the American atmosphere would not now be charged with the spirit to tear things. From remote generations on down in natural sequence to the present day, the criminologist must be able to probe to the particular instinctive predispositions that motivate special groups to unsocial and anti-social expression; and to trace parallel currents that run through American life and living which pull on the groups for that kind of expression. Not to be caught without the possible key to the deviated case, the right man in place will know such as his Freud and Kraaft-Ebing. He must not be carried off his balance by newly-paired polysyllables, nor bow conviction to related ideas so framed as to fight each other, yet avoid planting his empirical feet where mental research treads with unanswerable proof. His call thereof is to cull knowingly and apply with care in accordance with comparative magnitudes. To place emphasis properly is one of the nice duties of him who seeks earnestly to serve; and duty no less demands that he shall select sparingly of unproven hypotheses. This, because the mental faddist is the most liable of all men to be ridden rather than riding. To persist for truth in the face of a common skepticism is at once noble and necessary; but to do it, one must bear equipment more convincing than "an itch to dabble" and "the nerve to flare his farthing candle." Single-seeing brings little of serviceable grist to the reform mill. Single-track doing brings less. Whole-seeing by a criminologist requires much more of him than a technically well-fed mind. He may, for example, know generally about the functioning of the human brain; but if he judges falsely as to mental overemphasis affected by the subject from spurious motive, he will not score for the man, nor for himself. Padding of comparatively slight deviations, cunningly employed by "faking" and malingering criminals, is a common trick which must be religiously guarded against. When the padding is superinduced by suggestion from the mental healer, as the writer has known it to be, his subject from then on usually takes the short cut to the abyss. Such as psychoanalysis, employed by other than the master of it, as well as of its correct application to reformative processes, is a most pernicious tool.