A 1920 Scientific Monthly article on abaca (Manila hemp), the leaf-sheath fiber of Musa textilis, and its role as a Philippine monopoly. It covers the plant's cultivation, soil and climate needs, harvesting, hand stripping of the fiber, the 1914 fiber grading law, uses (rope, paper, hat braid, local goods), and export statistics for 1899-1917. Shorter sections treat maguey, sisal, and minor fiber plants such as kapok, ramie, pina and buri raffia. It includes a map of hemp-producing areas and a table of hemp exports.