Christian policy in full practice among the people of Harmony [electronic resource] : as described in Melish's Travels through the United States, and Birkbeck's Notes on a Journey in America, to which are subjoined, a concise view of the Spencean system of agrarian fellowship, and some observations on the manifest similarity between the principles of that system and the truly fraternal and christianly establishment of the Harmonites / by a Spencean philanthropist