n Evolution._ New York, 1911.

Punnett, R.C. _Mendelism._ New York, 1911.

Saleeby, C.W. _Methods of Race Regeneration._ New York, 1912.

---- _Parenthood and Race Culture._ New York, 1909.

Walter, H.E. _Genetics._ New York, 1913.

Winship, A.E. _Jukes-Edwards; a Study in Education and Heredity._
Harrisburg, 1900.

CHAPTER IV

MEDICAL PHASES

Dock, L.L. _Hygiene and Morality; Medical, Social and Legal Aspects of
Venereal Diseases._ New York, 1910.

Fisher, Irving. _National Vitality._ Washington, 1910. U.S. 61st Cong., 2d
Sess. Senate Doc. 419.

Hall, W.S. _Biology, Physiology, and Sociology of Reproduction_ also,
_Sexual Hygiene._ Ed. 11. Chicago, 1906.

Keyes, E.L. _Observations of the Persistence of Gonococci in the Male
Urethra._ American Journal of the Medical Science, January, 1912.

Morrow, P.A. _Social Diseases and Marriage._ Philadelphia, 1904.

Taylor, R.W. _Practical Treatise on Genito-Urinary and Venereal Diseases
and Syphilis._ Ed. 3. Philadelphia, 1904.

CHAPTER V

ECONOMIC PHASES

Adams, T.S., _and_ Sumner, H.L. _Labor Problems._ Ed. 8. New York, 1911.
Chap. I.

Addams, Jane. _A New Conscience and an Ancient Evil._ New York, 1912.

Butler, E.B. _Women and the Trades._ New York, 1909.

Flexner, Abraham. _Prostitution in the United States._ New York. (In
preparation.) Bureau of Social Hygiene Publications.

---- _Prostitution in Western Europe._ New York, 1913. Bureau of Social
Hygiene Publications.

Fosdick, R.D. _European Police Systems._ New York, 1913. Bureau of Social
Hygiene Publications.

Goldmark, Josephine. _Fatigue and Efficiency._ New York, 1912.

Kelley, Florence. _Some Ethical Gains through Legislation._ New York,
1905.

Kneeland, G.J. _Commercialized Prostitution in New York City._ New York,
1913. Bureau of Social Hygiene Publications.

More, L.B. _Life Earner's Budgets; A Study of Standards and Cost of Living
in New York City._ New York, 1907.

Roe, C.G. _Panders and their White Slaves._ Chicago, 1910.

Ryan, J.A. _A Living Wage._ New York, 1910.

Sanger, W.W. _History of Prostitution._ New York, 1913.

Seligman, E.R.A., ed. _Social Evil._ Ed. 2, rev. New York, 1912. Chap. I.

Streightoff, F.H. _Standard of Living among Industrial People of America._
Boston, 1911.

U.S. Bureau of Labor. _Women and Child Wage-Earners in the United States._
Washington, 1911-12. Vols. 5, 15.

U.S. Immigration Commission. _Steerage Conditions; Importation