I desire most heartily to thank the numerous friends and correspondents, some living in remote parts of the world, who have freely assisted me in my work with valuable information and personal histories. To Mr. F.H. Perry-Coste I owe an appendix which is by far the most elaborate attempt yet made to find evidence of periodicity in the spontaneous sexual manifestations of sleep; my debts to various medical and other correspondents are duly stated in the text. To many women friends and correspondents I may here express my gratitude for the manner in which they have furnished me with intimate personal records, and for the cross-examination to which they have allowed me to subject them. I may already say here, what I shall have occasion to say more emphatically in subsequent volumes, that without the assistance I have received from women of fine intelligence and high character my work would be impossible. I regret that I cannot make my thanks more specific.
The Definition of Modesty--The Significance of Modesty--Difficulties in the Way of Its Analysis--The Varying Phenomena of Modesty Among Different Peoples and in Different Ages.
Modesty an Agglomeration of Fears--Children in Relation to Modesty--Modesty in Animals--The Attitude of the Medicean Venus--The Sexual Factor of Modesty Based on Sexual periodicity and on the Primitive Phenomena of Courtship--The Necessity of Seclusion in Primitive Sexual Intercourse--The Meaning of Coquetry--The Sexual Charm of Modesty--Modesty as an Expression of Feminine Erotic Impulse--The Fear of Causing Disgust as a Factor of Modesty--The Modesty of Savages in Regard to Eating in the Presence of Others--The Sacro-Pubic Region as a Focus of Disgust--The Idea of Ceremonial Uncleanliness--The Custom of Veiling the Face--Ornaments and Clothing--Modesty Becomes Concentrated in the Garment--The Economic Factor in Modesty--The Contribution of Civilization to Modesty--The Elaboration of Social Ritual.
The Blush the Sanction of Modesty--The Phenomena of Blushing--Influences Which Modify the Aptitude to Blush--Darkness, Concealment of the Face, Etc.
Summary of the Factors of Modesty--The Future of Modesty--Modesty an Essential Element of Love.
The Various Physiological and Psychological Rhythms--Menstruation--The Alleged Influence of the Moon--Frequent Suppression of Menstruation among Primitive Races--Mittelschmerz--Possible Tendency to a Future Intermenstrual Cycle--Menstruation among Animals--Menstruating Monkeys and Apes--What is Menstruation--Its Primary Cause Still Obscure--The Relation of Menstruation to Ovulation--The Occasional Absence of Menstruation in Health--The Relation of Menstruation to "Heat"--The Prohibition of Intercourse during Menstruation--The Predominance of Sexual Excitement at and around the Menstrual Period--Its Absence during the Period Frequently Apparent only.