One boy in Bontoc, just at the age of puberty, has a tattoo encircling the lower jaw and chin, a wavy line across the forehead, a straight line down the nose, and crosses on the cheeks; but he is the youngest person I have seen wearing the jaw tattoo - a mark quite commonly made in Bontoc when the Chak-lag', or head-taker's emblem, is put on.
"The Bontoc Igorot"
Albert Ernest Jenks
No matter what the exact social importance or advantage may be, it seems that every man in Bontoc who has the right to the emblem shows his appreciation of the privilege, since nine-tenths of the men wear the Chak-lag'.
"The Bontoc Igorot"
Albert Ernest Jenks
For a time you'll belong to the 'Chee-Chak-O' class.
"The Boy Scouts on the Yukon"
Ralph Victor
