The appetite of sleep.--The physiology of sleep.--Etiology
of insomnia.--Symptoms of insomnia.--Intrinsic
insomnia.--Varieties of intrinsic
insomnia.--Psychic insomnia.--Emotional
shock and prolonged mental strain as causes
of insomnia.--The nervous temperament.--Symptoms
of intrinsic insomnia.--Toxic
insomnia.--Insomnia from tobacco.--Alcoholic
insomnia.--Insomnia from tea or from coffee.--Gouty
insomnia.--Senile insomnia. 9