Book digitized by Google from the library of the University of Michigan and uploaded to the Internet Archive by user tpb.
pt. I. Pioneers of evolution from Thales to Lucretius, B.C. 600-A.D. 50.--pt. II. The arrest of inquiry, A.D. 50-A.D. 1600: 1. From the early Christian period to the time of Augustine, A.D. 50-A.D. 400. 2. From Augustine to Lord Bacon, A.D. 400-A.D. 1600.--pt. 3. The renascence of science, A.D. 1600 onward.--pt. IV. Modern evolution: 1. Darwin and Wallace. 2. Herbert Spencer. 3. Thomas Henry Huxley