batissa = 2d 1. 7.
batiwwi = 2d 2. 8.
batti-biata = 2d 3. 9.
batti-biama = 2d 4. 10.
bauwe = 2d 5. That this method of progression is not confined to the least developed languages, however, is shown by a most cursory examination of the numerals of our American Indian tribes, where numeral formation like that exhibited above is exceedingly common.