The book ""Memoirs Of S. F. Johnston, J. W. Matheson, And Mary Johnston Matheson: Missionaries On Tanna (1864)"" by George Patterson is a historical account of the lives and experiences of three Christian missionaries who lived and worked on the island of Tanna in the mid-19th century. The book is divided into three parts, each focusing on the memoirs of one of the missionaries.The first part is the memoir of S. F. Johnston, who was a Scottish Presbyterian...