A REVIEW OF THE DATA FOR THE STUDY OF THE PRE-HISTORIC CHRONOLOGY OF AMERICA 20–47 Classification of Data. I. _Legendary_: of northern tribes; of Peruvians, Mexicans and Mayas; limited range. II. _Monumental_: pueblos of New Mexico; stone and brick structures of Mexico, Central America and Peru; ruins of Tiahuanaco; artificial shell heaps; the _sambaquis_ of Brazil. III. _Industrial_: palæolithic implements; early polished stone implements; dissemination of cultivated food plants. IV. _Linguistic_: multitude and extension of linguistic stocks; tenacity of linguistic form; similarities of internal form; study of internal form. V. _Physical_: racial classifications; traits of the American typ…
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