THE MEMORY OF FEELINGS 140 Can emotional images be revived, spontaneously or voluntarily?—Summary of scattered facts relating to this subject—Inquiry into this question, and method followed—Emotional and gustative images—Internal sensations (hunger, thirst, fatigue, disgust, etc.)—Pleasures and pains; observations—Emotions: three distinct forms of revivability according to observations—Reduction of the images to three groups: revivability, direct and easy, indirect and comparatively easy, difficult and sometimes direct, sometimes indirect—The revivability of a representation is in proportion to its complexity and the motor elements included in it—Reservations to be made on this last point—Is there such a thing as a real emotional memory?—Two cases: false or abstract, and true or concrete memory—Peculiar characters and differences of each case—Change of the emotional into an intellectual recollection—Emotional amnesia: its practical consequences—There exists a general emotional type and partial emotional types—Confirmatory observations—Comparative revivability of agreeable and disagreeable states—To feel acutely and to recall an acute impression of the feeling are two different operations. CHAPTER XII. THE FEELINGS AND THE ASSOCIATION OF IDEAS 172 The function of the feelings, as the cause of association—The law of affective association, conceived as general, and as local—I. Function of unconscious feeling: ancestral or hereditary unconsciousness; personal unconsciousness arising from cœnæsthesia; personal unconsciousness arising from the events of our life—Law of transference by contiguity, by resemblance: wide or narrow—II. Function of the conscious feelings: accidental cases, permanent cases, exceptional or rare cases. _Part II._—SPECIAL PSYCHOLOGY. INTRODUCTION 187 Importance of the study of special feelings—Utility of historical documents—Causes of the evolution of the feelings: (1) intellectual development; (2) hereditary influence, perhaps reducible to influences of environment—Cases in which the evolution of ideas precedes that of feelings—Inverse cases—The intellect swayed by the principle of contradiction; feeling by that of finality—Classification of primitive tendencies—Method to be followed—Group I.: physiological (reception, transformation, restitution)—Group II.: psychophysiological—Group III.: psychological—Their enumeration. CHAPTER I. THE INSTINCT OF CONSERVATION IN ITS PHYSIOLOGICAL FORM 199