This paper surveys analytic contributions to criminology and the relations of analysis to other sciences concerned with delinquency. Most analysts have had little or no experience in institutions for the delinquent or criminal; consequently they lack the basic data from which valid conclusions and inferences may be drawn. Diagnostic labeling is confusing and scientifically unsound. Analytic principles have been employed in treatment, but Glover believes that true analysis has rarely been employed. Analysis is much more valuable for research and for prevention than as a method of treatment.