1. Some modern aspects of the life-question: address of Prof. George F. Barker, president of the American Association for the Advancement of Science, Boston meeting, August, 1880 Author(s): Barker, George F. (George Frederick), 1835-1910, author Publication: Salem, Mass. : Salem Press, 1880 Subject(s): LifePhysical PhenomenaPhysiological Phenomena