CHAPTER VI. The Nervous System As the Balance of Power in the

THE NERVOUS SYSTEM AS THE BALANCE OF POWER IN THE BODY 184

The Brain the Master Organ of the Body; the Functions of the Brain; Habit and Automatism; the Physiology of the Brain and Nervous System; the Hygiene of Work; the Toxins of Fatigue; Overwork; Signs of Overwork; Nature’s Restoratives; Avocation; the Physiologic Necessity for Laughter; Vacations and Health; Sleep; Insomnia.

The Eyes; Eye-strain; Description of the Visual Apparatus; Optical Defects and Their Correction; the Mechanism of Eye-strain; Local Symptoms of Eye-strain; Artificial Lighting; Hygienic Precautions in Reading and Sewing; Injuries to the Eyes; Symptoms and Treatment of Conjunctivitis; Trachoma; Styes.

Functional Nervous Disorders; Headache; Neurasthenia.