Intimate Connection between the Body and Mind—Brain excited by improper Stimulants taken into the Stomach—Mental Faculties then affected—Causes of mental Disease—Want of oxygenized Blood—Fresh Air absolutely necessary—Excessive Exercise of the Intellect or Feelings—Such Attention to Religion as prevents the Performance of other Duties wrong—Unusual Precocity in Children usually the Result of a diseased Brain—Idiocy often the Result, or the precocious Child sinks below the Average of Mankind—This Evil yet prevalent in Colleges and other Seminaries—A medical Man necessary in every Seminary—Some Pupils always needing Restraint in regard to Study—A third Cause of mental Disease, the Want of appropriate Exercise of the various Faculties of the Mind—Extract from Dr. Combe—Beneficial Results of active intellectual Employments—Indications of a diseased Mind 293 CHAPTER XVII. CARE OF THE AGED. Preservation of the Aged, designed to give Opportunity for Self-denial and loving Care—Patience, Sympathy, and Labor for them to be regarded as Privileges in a Family—The Young should respect and minister unto the Aged—Treating them as valued Members of the Family—Engaging them in domestic Games and Sports—Reading aloud—Courteous Attention to their Opinions—Assistance in retarding Decay of Faculties by helping them to Exercise—Keeping up Interest of the Infirm in domestic Affairs—Great Care to preserve animal Heat—Ingratitude to the Aged: its baseness—Chinese Regard for old Age 301 CHAPTER XVIII. CARE OF DOMESTIC ANIMALS. Interesting Association of Animals with Man, from Childhood to Age—Domestic Animals apt to catch the Spirit of their Masters—Important Necessities—Good Feeding—Shelter—Cleanliness—Destruction of parasitic Vermin—Salt and Water—Light—Exercise—Rule for Breeding—Care of Horses: Feeding, Grooming, special Treatment—Cows: Stabling, Feed, Calving, Milking, Tethering—Swine: naturally cleanly, Breeding, fresh Water, Charcoal, Feeding—Sheep: winter Treatment—Diet—Sorting—Use of Sheep in clearing Land—Pasture—Hedges and Fences—Poultry—Turkeys—Geese—Ducks—Fowls—Dairy Work generally—Bees—Care of domestic Animals, Occupation for Women 305 CHAPTER XIX. CARE OF THE SICK.