Part I. The problem of training thought : What is thought? -- The need for training thought -- Natural resources in the training of thought -- School conditions and the training of thought -- The means and end of mental training: the psychological and the logical -- Part II. Logical considerations : The analysis of a complete act of thought -- Systematic inference: induction and deduction -- Judgment: the interpretation of facts -- Meaning: or conceptions and understanding -- Concrete and abstract thinking -- Empirical and scientific thinking -- Part III. The training of thought : Activitiy and the training of thought -- Language and the training of thought ; Observation and information in the training of mind -- The recitation and the training of thought -- Some general conclusions.