according to Agassiz from eight centres of origin, 481

his racial unity, consistent with all existing physical varieties, 481, 482

physiological change in, illustrated, 482

his “originally greater plasticity,” 482

his racial unity, authorities on, 482, 483

the essential elements of his nature, 483-488

the dichotomous theory of his nature, 483, 484

the dichotomous theory of, supported by consciousness, 483

the dichotomous theory of, supported by Scripture, 483, 484

the trichotomous theory of his nature, 484-488