Henry George Atkinson (c.1812 c.1890), a free thinker and supporter of naturalism, published extensively on phrenology, mesmerism, and spiritualism. He became acquainted with the professional writer, political activist and radical philosopher Harriet Martineau (1802 76) in the 1840s, when she attributed her recovery from a long illness to mesmerism. Their correspondence was published in 1851, and promotes a radical form of atheistic naturalism, more extreme than that found in George Combe's best-selling Constitution of Man (also published in this series). It ranges widely over topics...