officially China has no law forbidding swimming nude. In a July 2005 a heat wave, a number of incidents of men skinny-dipping were noted. England In English boys' schools (Manchester Grammar School, for example), students recall nude swimming being required at least from the 1930s until the 1970s. No official reason for the practice was given, but some mention the problem in the early years of fibres from wool swimsuits clogged pool filters. However, nude swimming continued when modern swimsuit materials were available. United States In the United States, skinny-dipping by young people, mostly boys, was common in rural areas across the country. As towns such as Logan, Utah, Humboldt, Iowa and Dixon, Illinois grew in the 1890s, the traditional locations became more visible to the public, and local ordinances were implemented prohibiting nude swimming, but were difficult to enforce, or involved very young children who were not punished. Among the features of rural Vermont being overtaken by development in the 1970s, an editorial mentions the removal of forests that sheltered ponds where boys had been swimming naked for 200 years. Older residents of Duncanville, Texas, remembered the "Blue Hole" on Ten Mile Creek a few hundred feet west of Main Street as the place to skinny-dip for decades. In 1967, misbehavior including drinking, fighting, and accidents led to complaints and calls to make the place off-limits. American president Theodore Roosevelt described nude swims in the Potomac with his "tennis cabinet" in his Autobiography: "If we swam the Potomac, we usually took off our clothes". Ernest Thompson Seton describes skinny dipping as one of the first activities of his Woodcraft Indians, a forerunner of the Scout movement, in 1902. A 1937 article on swimming at boy scout summer camps in Washington state makes no mention of the boys being naked in almost all the photographs. Descriptions of special "carnival" days that were coed did not mention whether swimsuits were available. It does state "Both boys and girls enjoy the thrill of swimming in the nude, so on occasion, suits may be discarded for the night plunge." Night swimming was allowed only in camps were this was safe. Swimming in indoor pools Initially, men and boys swam in the nude in indoor swimming pools, as had previously been customary in lakes and rivers. YMCAs everywhere had nude swimming beginning in the 1890s until they became coed in the 1960s. Given the