There are many unknowns in any formula describing the sexual conduct of the American people. Some of these have been partially solved through the efforts of the amazing Dr. Kinsey. Not only has Dr. Kinsey produced facts but, far more important, he has stressed principles. The foremost, that one cannot make generalizations which apply to the sexual practices of the American. In matters of sex there is no typical Mr. or Mrs. America, for our sexual mores are stratified, each layer largely determined by educational background and economic status. It therefore becomes important in establishing the status of modern contraception to inquire into the conceptional and anticonceptional histories and practices of all types of people, under all conditions, from all walks of life and from all parts of the country. Most of the studies previously reported have been based on specialized groups under specialized conditions — namely, contraceptive clinic patients