1. The relations of mind and brain: Interaction of mind and brain--The brain as the mind's machine. 2. The mind's dependence on the external world: The mind at birth--The work of the senses. 3. Structural elements of the nervous system: The neurone--Neurone fibers--Neuroglia--Complexity of the brain--"Gray" and "white" matter. 4. Gross structure of the nervous system: Divisions of the nervous system--The central system--The cerebellum--The cerebrum--The cortex--The spinal cord. 5. Localization of function in the nervous system: Division of labor--Division of labor in the cortex. 6. Forms of sensory stimuli: The end-organs and their response to stimuli--Dependence of the mind on the senses . . . . . . . . . . . . . 30 CHAPTER IV MENTAL DEVELOPMENT AND MOTOR TRAINING 1. Factors determining the efficiency of the nervous system: Development and nutrition--Undeveloped cells--Development of nerve fibers. 2. Development of nervous system through use: Importance of stimulus and response--Effect of sensory stimuli--Necessity for motor activity--Development of the association centers--The factors involved in a simple action. 3. Education and the training of the nervous system: Education to supply opportunities for stimulus and response--Order of development in the nervous system. 4. Importance of health and vigor of the nervous system: The influence of fatigue--The effects of worry--The factors in good nutrition. 5. Problems for introspection and observation . . . . . . . . . . . . . . . . . . . . . 50 CHAPTER V HABIT 1. The nature of habit: The physical basis of habit--All living tissue plastic--Habit a modification of brain tissue--We must form habits. 2. The place of habit in the economy of our lives: Habit increases skill and efficiency--Habit saves effort and fatigue--Habit economizes moral effort--The habit of attention--Habit enables us to meet the disagreeable--Habit the foundation of personality--Habit saves worry and rebellion. 3. The tyranny of habit: Even good habits need to be modified--The tendency of "ruts." 4. Habit-forming a part of education: Youth the time for habit-forming--The habit of achievement. 5. Rules for habit-forming: James's three maxims for habit-forming--The preponderance of good habits over bad . . . . . . . . . . . . . . . . . . . . . . . . 66 CHAPTER VI SENSATION 1. How we come to know the external world: Knowledge through the senses--The unity of sensory experience--The sensory processes to be explained--The qualities of objects exist in the mind--The three sets of factors. 2. The nature of sensation: Sensation gives us our world of qualities--The attributes of sensation. 3. Sensory qualities and their end-organs: Sight--Hearing--Taste--Smell--Various sensations from the skin--The kinaesthetic senses--The organic senses. 4. Problems in observation and retrospection . . . . . . . . . . . . . . . . . . . . . 84 CHAPTER VII PERCEPTION