Thomas Fuller   African slave and mathematician 1710-1790   In most discussions of people with extraordinary powers of mental calculation, there is some mention of Thomas Fuller, an African, shipped to America in 1724 as a slave at the age of 14. He was born in 1710 Africa somewhere between present day Liberia and Benin. Late in his life his remarkable powers of calculation made him a tool of abolitionists due demonstrate blacks are not mentally inferior to whites. After is death,...