The Yorùbá Vigesimal System

The Yorùbá Vigesimal System On the 9th of March 1886, members of The Royal Anthropological Institute of Great Britain and Ireland met in London to examine the paper titled: "Notes on the Numeral System of the Yoruba Nation" authored by Adolphus Mann Esq. The following are some of the excerpts from Adolphus Mann's report regarding the Yorùbá Numeral System: "...Perhaps the following notes on the numeral system of the Yoruba nation may interest the student of ethnology and languages, and may be of some use in investigating the nature of the mind that can form such an unusual, yet regular structure... suffices to understand the peculiarities in the arrangement of these numerals to which analogies in other languages are but rarely found. We light, as it were on a building, which, when viewed from base to summit is not behind our European systems in regularity and symmetry, while the system surpasses them [European systems] in the aptitude of interIinking the separate...