sponges and condoms. That book was followed by Fruits of Philosophy: The Private Companion of Young Married People, written in 1832 by Charles Knowlton, which recommended douching. Knowlton was prosecuted in Massachusetts on obscenity charges, and served three months in prison. Birth control practices were generally adopted earlier in Europe than in the United States. Knowlton's book was reprinted in 1877 in England by Charles Bradlaugh and Annie Besant, with the goal of challenging Britain's obscenity laws. They were arrested (and later acquitted) but the publicity of their trial contributed to the formation, in 1877, of the Malthusian League – the world's first birth control advocacy group – which sought to limit population growth to avoid Thomas Malthus' dire predictions of exponential population growth leading to worldwide poverty and famine. The first birth control clinic in the United States was opened in 1917 by Margaret Sanger, which was against the law at the time. By 1930, similar societies had been established in nearly all European countries, and birth control began to find acceptance in most Western European countries, except Catholic Ireland, Spain, and France. As the birth control societies spread across Europe, so did birth control clinics. The first birth control clinic in the world was established in the Netherlands in 1882, run by the Netherlands' first female physician, Aletta Jacobs. The first birth control clinic in England was established in 1921 by Marie Stopes, in London. Anti-contraception laws Contraception was not restricted by law in the United States throughout most of the 19th century, but in the 1870s a social purity movement grew in strength, aimed at outlawing vice in general, and prostitution and obscenity in particular. Composed primarily of Protestant moral reformers and middle-class women, the Victorian-era campaign also attacked contraception, which was viewed as an immoral practice that promoted prostitution and venereal disease. Anthony Comstock, a grocery clerk and leader in the purity movement, successfully lobbied for the passage of the 1873 Comstock Act, a federal law prohibiting mailing of "any article or thing designed or intended for the prevention of conception or procuring of abortion" as well as any form of contraceptive information. After passage of this first Comstock Act, he was appointed to the position of postal inspector. Many states also passed similar state laws (collectively known as the Comstock laws), sometimes extending the federal law by additionally restricting contraceptives, including information about them and