[50] Such register should, as Bertillon rightly insisted, be of the most complete description--setting forth all the anthropological traits of the contracting parties--so that the characteristics of a human group at any time and place may be studied and compared. Registration of this kind would, beside its more obvious convenience, form an almost indispensable guide to the higher evolution of the race. I may here add that I have assumed, perhaps too rashly, that the natural tendency among civilized men and women is towards a monogamic and more or less permanent union; preceded, it may be in most individuals, by a more restless period of experiment. Undoubtedly, many variations will arise in the future, leading to more complex relationships. Such variations cannot be foreseen, and when they arise they will still have to prove their stability and their advantage to the race. [51] As among geese, and, occasionally, it is said, among elephants. III THE NEW ASPECT OF THE WOMAN'S MOVEMENT Eighteenth-Century France--Pioneers of the Woman's Movement--The Growth of the Woman's Suffrage Movement--The Militant Activities of the Suffragettes--Their Services and Disservices to the Cause--Advantages of Women's Suffrage--Sex Questions in Germany--Bebel--The Woman's Rights Movement in Germany--The Development of Sexual Science in Germany--the Movement for the Protection of Motherhood--Ellen Key--The Question of Illegitimacy--Eugenics--Women as Law-makers in the Home. I