States" at the time of the Scopes Trial in 1925, he disagreed with Darwin's views on the origins of humanity. Gregory and Osborn repeatedly debated the issue in public forums, but Osborn's view that humans had evolved from early ancestors who did not look like apes prevailed among American anthropologists in the 1930s and 1940s. In 1938, Gregory visited South Africa and saw the Taung Child and the fossils that Broom had recently discovered. More convinced than ever that Dart and Broom were right, he called Australopithecus africanus "the missing link no longer missing". The turning point in the acceptance of Dart's analysis of the Taung Child came in 1947, when the prominent British anthropologist Wilfrid Le Gros Clark announced that he supported it. Le Gros Clark, who would also play an important role in exposing the fraud of the Piltdown Man in 1953, visited Johannesburg in late 1946 to study Dart's Taung skull and Broom's adult fossils, with the intention of proving that they were only apes. After two weeks of studies and visiting the caves in which Broom had found his fossils (the Taung cave had been destroyed by miners soon after the discovery of the Taung skull), however, Clark became convinced that these fossils were hominids rather than pongids. In 1947, Sir Arthur Keith published in Nature, announcing his support of Dart and Broom's research. He stated "the evidence submitted by Dr. Robert Broom and Professor Dart was right and I was wrong", agreeing that with the new evidence along with the Taung Fossil indicated that this fossil was human-like in posture, dental elements, and its bipedal walk. In early January 1947, at the First Pan-African Congress on Prehistory, Wilfrid Le Gros Clark was the first anthropologist of such stature to call the Taung Child a "hominid": an early human. An anonymous article, published in Nature on 15 February 1947, announced Clark's conclusions to a wider public. On that day, Keith, who had been one of Dart's most virulent critics, composed a letter to the editor of Nature announcing that he supported Clark's analysis: "I was one of those who took the point of view that when the adult form [of Australopithecus] was discovered it would prove to be near akin to the living African anthropoidsthe gorilla and the chimpanzee. I am now convinced... that Prof. Dart was right and that I was wrong. The Australopithecinae are