CHAPTER II.

FEAR 207

Fear the conservative instinct under its defensive form—Physiology—Psychology—First stage: Instinctive fear—Hypothesis of heredity—Second stage: Fear founded on experience—Pathology—Morbid or pathological fears—Two periods in their study—Attempts at classification—How are they derived from normal fear? Two groups, connected respectively with fear and disgust—Inquiry into the immediate causes: events in life of which a recollection has been retained; of which no recollection has been retained—Occasional transformation of a vague state into a precise form.