The best book for practical use is H. S. Warner's Social Welfare and the Liquor Problem (revised edition, 1913), where extensive references to the authorities will be found. Two other excellent popular books are H. S. Williams, Alcohol (1909), and Horsley and Sturge, Alcohol and the Human Body (1911). See also Rosanoff, in McClure's Magazine, vol. 32, p. 557; Rountree and Sherwell, The Temperance Problem and Social Reform; T. N. Kelynack, The Drink Problem: Scientific Conclusions concerning the Alcohol Problem (Senate Document 48, 61st Congress, 1909); and the five volumes of conclusions of the Committee of Fifty, published by Houghton, Mifflin Co, under the general title, Aspects of the Liquor Problem; a summary of these conclusions is published with the title The Liquor Problem, ed. F. J. Peabody. Barker, The Saloon Problem and Social Reform. Fanshawe, Liquor Legislation in the United States and Canada. C. B. Henderson, The Social Spirit in America, chap. XVI. The best available data, to date, on the physiological questions underlying the moral questions may be found in G. Rosenfeld, Der Einfluss des Alkohols auf den Organismus (1901) A.B.Cushney, The Action of Alcohol (1907)-paper read before the British Association; Meyer and Gottlieb, Pharmacology (1914). CHAPTER XVII CHASTITY AND MARRIAGE TEMPERANCE In the indulgence of the appetites is a manifest necessity for health and efficiency-temperance in work and play, in eating and drinking, in novel reading and theater going, in whatever activity desire may suggest. But two appetites stand on a different footing from the others, and demand more than temperance. The love of alcohol and the other narcotics, being, as we have seen, a pathological and highly dangerous appetite, productive of scarcely any real good, must be completely rooted out of human nature, as it readily can be, to the great advantage of mankind. The other great appetite, that of sex, cannot be treated so cavalierly; to eradicate it or deny its fulfillment would be to put a speedy end to the human race. The solution of the problems of sex is therefore not so simple, the remedying of the evils of which sexual passion is the source not so feasible. On the one hand, we have to recognize the sex instinct as normal and necessary, the source of the keenest, and, indirectly, of some of the most lasting, pleasures of life; the denial of its enticements to the extent which our Christian ideal demands provokes perennial resentment and rebellion. On the other hand, we are confronted by the incalculable evils which unrestrained lust produces, and forced to admit the imperious necessity of some strictly repressive code. To many, the gravest dangers in life lie here; the sex instinct is the great rebel, promising a glorious liberty, a melting of the barriers between human bodies and souls, an ecstasy of mutual happiness that nothing else can offer. Yet beyond these transient