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Text on page 416
416 THE PHILIPPINE ISLANDS
GROUP OF MANGYANS,
Showing effect of contact with civilized nativesa Laguna de Naujan, Mindoro
These lowlanders were an inferior class mentally, as well as physically. The mountaineers count up to ten and then repeat. Few of the lowlanders could get above three, although their most learned mathematicians managed to compass twenty by using the fingers of both hands and the toes of both feet. As they always counted in a definite direction, each digit came to have its predetermined mathematical value. Ordinarily, however, if we wished a man to return in five days, we tied as many knots in a bit of rattan, and instructed him to untie one of them each morning.