= 40 + 10.
60. dzum en oets = 3 x 20.
70. dzum en oets do wit = 60 + 10.
80. otch-an-oets = 4 x 20.
100. os.
1000. silia (akin to Greek).

CHUNSAG.[350]

10. ants-go.
20. chogo.
30. chogela antsgo = 20 + 10.
40. kichogo = 2 x 20.
50. kichelda antsgo = 40 + 10.
60. taw chago = 3 x 20.
70. taw chogelda antsgo = 60 + 10.
80. uch' chogo = 4 x 20.
90. uch' chogelda antsgo.
100. nusgo.
1000. asargo (akin to Persian).

DIDO.[351]

10. zino.
20. ku.
30. kunozino.
40. kaeno ku = 2 x 20.
50. kaeno kuno zino = 40 + 10.
60. sonno ku = 3 x 20.
70. sonno kuno zino = 60 + 10.
80. uino ku = 4 x 20.
90. uino huno zino = 80 + 10.
100. bischon.
400. kaeno kuno zino = 40 x 10.

AKARI

10. entzelgu.
20. kobbeggu.
30. lowergu.
40. kokawu = 2 x 20.
50. kikaldanske = 40 + 10.
60. secikagu.
70. kawalkaldansku = 3 x 20 + 10.
80. onkuku = 4 x 20.
90. onkordansku = 4 x 20 + 10.
100. nosku.
1000. askergu (from Persian).

CIRCASSIA

10. psche.
20. to-tsch.
30. totsch-era-pschirre = 20 + 10.
40. ptl'i-sch = 4 x 10.
50. ptl'isch-era-pschirre = 40 + 10.
60. chi-tsch = 6 x 10.
70. chitsch-era-pschirre = 60 + 10.
80. toshitl = 20 x 4?
90. toshitl-era-pschirre = 80 + 10.
100. scheh.
1000. min (Tartar) or schi-psche = 100 x 10.

The last of these scales is an unusual combination of decimal and
vigesimal. In the even tens it is quite regularly decimal, unless 80 is of
the structure suggested above. On the other hand, the odd tens are formed
in the ordinary vigesimal manner. The reason for this anomaly is not
obvious. I know of no other number system that presents the same
peculiarity, and cannot give any hypothesis which will satisfactorily
account for its presence here. In nearly all the examples given the decimal
becomes the leading element in the formation of all units above 100, just
as was the case in the Celtic scales already noticed.

Among the northern tribes of Siberia the numeral scales appear to be ruder
and less simple than those just examined, and the counting to be more
consistently vigesimal than in any scale we have thus far met