New instances of counting by twenties may still be found in northern Siberia, where much ethnological work yet remains to be done, and where a tendency toward this form of numeration has been observed to exist.

But the total number of Asiatic vigesimal scales must always remain small--quite insignificant in comparison with those of decimal formation.
In the Caucasus region a group of languages is found, in which all but three or four contain vigesimal systems.

These systems are as follows: ABKHASIA.[349] 10.

zpha-ba.
20.

gphozpha = 2 x 10.
30.