10. iri. 20. ogu. 30. ogu n-iri = 20 + 10, or iri ato = 10 x 3. 40. ogu abuo = 20 x 2, or iri anno = 10 x 4. 100. ogu ise = 20 x 5. VEI.[340] 10. tan. 20. mo bande = a person finished. 30. mo bande ako tan = 20 + 10. 40. mo fera bande = 2 x 20. 100. mo soru bande = 5 persons finished. YORUBA.[341] 10. duup. 20. ogu. 30. ogbo. 40. ogo-dzi = 20 x 2. 60. ogo-ta = 20 x 3. 80. ogo-ri = 20 x 4. 100. ogo-ru = 20 x 5. 120. ogo-fa = 20 x 6. 140. ogo-dze = 20 x 7. 160. ogo-dzo = 20 x 8, etc. EFIK.[342] 10. duup. 20. edip. 30. edip-ye-duup = 20 + 10. 40. aba = 20 x 2. 60. ata = 20 x 3. 80. anan = 20 x 4. 100. ikie. The Yoruba scale, to which reference has already been made, p. 70, again shows its peculiar structure, by continuing its vigesimal formation past 100 with no interruption in its method of numeral building. It will be remembered that none of the European scales showed this persistency, but passed at that point into decimal numeration. This will often be found to be the case; but now and then a scale will come to our notice whose vigesimal structure is continued, without any break, on into the hundreds and sometimes into the thousands. BONGO.[343] 10. kih. 20. mbaba kotu = 20 x 1. 40. mbaba gnorr = 20 x 2. 100. mbaba mui = 20 x 5. MENDE.[344] 10. pu. 20. nu yela gboyongo mai = a man finished. 30. nu yela gboyongo mahu pu = 20 + 10. 40. nu fele gboyongo = 2 men finished. 100. nu lolu gboyongo = 5 men finished. NUPE.[345] 10. gu-wo. 20. esin. 30. gbonwo. 40. si-ba = 2 x 20. 50. arota. 60. sita = 3 x 20. 70. adoni. 80. sini = 4 x 20. 90. sini be-guwo = 80 + 10. 100. sisun = 5 x 20. LOGONE.[346] 10. chkan. 20. tkam. 30. tkam ka chkan = 20 + 10. 40. tkam ksde = 20 x 2. 50. tkam ksde ka chkan = 40 + 10. 60. tkam gachkir = 20 x 3. 100. mia (from Arabic). 1000. debu. MUNDO.[347] 10. nujorquoi. 20. tiki bere. 30. tiki bire nujorquoi = 20 + 10. 40. tiki borsa = 20 x 2. 50. tike borsa nujorquoi = 40 + 10. MANDINGO.[348] 10. tang. 20. mulu. 30. mulu nintang = 20 + 10. 40. mulu foola = 20 x 2. 50. mulu foola nintang = 40 + 10. 60. mulu sabba = 20 x 3. 70. mulu sabba nintang = 60 + 10. 80. mulu nani = 20 x 4. 90. mulu nani nintang = 80 + 10. 100. kemi.