A Tour of the Missions is a Religious book. The forty years of Augustus Hopkins Strong presidency and teaching in the Rochester Theological Seminary have been rewarded by the knowledge that more than a hundred of my pupils have become missionaries in heathen lands. For many years these former students have been urging me to visit them. Until recently seminary sessions and literary work have prevented acceptance of their invitations. When I laid down my official duties, two alternatives presented themselves: I could sit down and read through the new Encyclopædia Britannica, or I could go round the world. A friend suggested that I might combine these schemes. The publishers provide a felt lined trunk to hold the encyclopædia: I could read it, and circumnavigate the globe at the same time. This proposition, however, had an air of cumbrousness. I concluded to take my wife as my encyclopædia instead of the books, and this seemed the more rational since she had, seven or eight years before, made the same tour of the missions which I had in mind. To her therefore a large part of the information in the following pages is due, for in all my journey she was my guide, philosopher, and friend.