The work of the archeologists of the s revealed no very ancient habitation in the central and south Pacific. For the the evidence serves to substantiate the conclusions of , based on linguistic and cultural study. The following dates are considered reasonable estimates: A.D. 0, the first Polynesian migratory movement; A.D.600, a second migration; and A.D. 1000, a period of great Polynesian expansion.
— HERBERT E. GREGORY