Chapter III Petroglyphs in Central and South America
Some writers have endeavored to draw definite ethnic distinctions between the pre-Columbian inhabitants of North America and those farther south. The opinions and theories which have favored such discriminations have originated in error and ignorance. Until lately there has been but scanty scientific investigation of the peoples of Central and South America and but a limited exploration of the regions now or formerly occupied by them. The latest opinion of the best ethnologists is that no sufficient reason can be shown for separate racial classification of the aborigines of the three Americas. The examples of petroglyphs now presented from Central and South America, all of which are selected as typical, show remarkable similarity to some of those above illustrated and described, especially to those in California, New Mexico, and Arizona. This topic is further discussed under the heading of Special Comparison, Chapter xx, infra.