heng-teo.

400.

heang-momchiama.
In no other part of the world is vigesimal counting found so perfectly developed, and, among native races, so generally preferred, as in North and South America.

In the eastern portions of North America and in the extreme western portions of South America the decimal or the quinary decimal scale is in general use.

But in the northern regions of North America, in western Canada and northwestern United States, in Mexico and Central America, and in the northern and western parts of South America, the unit of counting among the great majority of the native races was 20.