Includes index Preface.--The scope and principles of the evolution philosophy, by L.G. James.--The relativity of the knowledge, by R.G. Eccles.--Primitive man, by Z.S. Sampson.--Growth of the marriage relation, by C.S. Wake.--Evolution of the state, by J.A. Taylor.--Evolution of law, by Rufus Sheldon.--Evolution of medical science, by R.G. Eccles.--Evolution of arms and armor, by J.C. Kinball.--Evolution of the mechanic arts, by J.A. Skilton.--Evolution of the wages system by George Gunton.--Education as a factor in civiliztion, by Caroline B. Le Row.--Evolution and social reform: I. The theological method, by J.W. Chadwick. II. The socialistic method, by William Potts. III. The anarchistic method, by H.O. Pentecost. IV. The scientific method, by D.G. Thompson.--Asa Gray: his life and work, by Mrs. Mary Treat.--Edward Livingston Youmans: the man and his work, by John Fiske