General account of the peculiarity; mutually corroborative statements; personal evidence given at the Anthropological Institute; specimens of a few descriptions and illustrative woodcuts; great variety in the Forms; their early origin; directions in which they run; bold conceptions of children concerning height and depth; historical dates, months, etc.; alphabet; derivation of the Forms from the spoken names of numerals; fixity of the Form compared to that of the handwriting; of animals working in constant patterns; of track of eye when searching for lost objects; occasional origin from figures on clock; from various other sources; the non-decimal nomenclature of numerals; perplexity caused by it. Description of figures in Plate I.; Plate II.; Plate III.; Plate IV. Colours assigned to numerals (see 105); personal characters; sex; frequency with which the various numerals are used in the Talmud. COLOUR ASSOCIATIONS (Description of Plate IV. continued) Associations with numerals; with words and letters; illustrations by Dr. J. Key; the scheme of one seer unintelligible to other seers; mental music, etc. VISIONARIES Sane persons often see visions; the simpler kinds of visions; unconsciousness of seers, at first, of their peculiarity; subsequent dislike to speak about it; imagery connected with words; that of Mrs. Haweis; automatic changes in dark field of eye; my own experiences; those of Rev. G. Henslow; visions frequently unlike vivid visualisations; phantasmagoria; hallucinations; simile of a seal in a pond; dreams and partial sensitiveness of brain; hallucinations and illusions, their causes; "faces in the fire," etc.; sub-conscious picture-drawing; visions based on patched recollections; on blended recollections; hereditary seership; visions caused by fasting, etc.; by spiritual discipline (see also 47); star of Napoleon I.; hallucinations of great men; seers commoner at some periods than at others; reasons why. NURTURE AND NATURE Their effects are difficult to separate; the same character has many phases; Renaissance; changes owing merely to love of change; feminine fashions; periodical sequences of changed character in birds; the interaction of nurture and nature. ASSOCIATIONS Derived from experience; especially from childish recollections (see 141); abstract ideas; cumulative ideas, like composite portraits (see also Appendix, "Generic Images," p. 229); their resemblance even in details. PSYCHOMETRIC EXPERIMENTS