Note 7 — Chapter IV · Economic Life Production (continued 2)

The fuel is an inferior charcoal prepared by the Igorot from pine. This bellows is found throughout the Archipelago and is evidently a Malayan product. It is believed that it came to Bontoc with the Igorot from their earlier home and is not, as some say, a Chinese invention.7 The Igorot manufacturer of metal pipes uses exactly the same kind of bellows, except that it is very much smaller, and so appears like a toy. It is poorly shown in Pl. CIX.