In Guatemala, 16ᵗʰ century, a unit of dry capacity used for cacao beans, = 8000 beans, about 1/6 fanega. It takes its name from the leather sack used to hold the beans.
Dan Stanislawski.
Guatemala Villages of the 16th Century.
http://libro.uca.edu/
This work was in progress at the time of Professor Stanislawski's death. Colleagues have made a slightly edited version of the manuscript available online. Though certainly not the book Stanislawski would have produced, it contains information from his study of legajo #128 in the Archive of the Indies that clarifies the meaning of a number of units.
Francesco Guerra.
Weights and Measures in Pre-Columbian America.
Journal of the History of Medicine and Allied Sciences, vol. 15,
pages 342-344 (1960).
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Last revised: 13 April 2007.