Asbestos
a variety of hornblende, least in a mass. It contains a consider- able percentage of magnesia in its com- position. It occurs mostly in serpentine least in a mass. It contains a considerable percentage of magnesia in its comdistricts. The varieties are: (a) Amiposition. It occurs mostly in serpentine anthus, in which the fibers are so exceedingly long, flexible, and elastic, that they may be woven into cloth. (b) Common asbestos, with the fibers much less flex- ible. It is heavier than the first variety. asbestos, with the fibers much less flexible. It is heavier than the first variety. (d) Mountain leather, also It is dull green, sometimes pearly in luster, and unctuous to the touch. (c) very light, but thinner and more flex- Mountain cork, light enough to float on water. (d) Mountain leather, also very light, but thinner and more flexwater. a designation formerly given to fine, ible than the last. (e) Mountain paper, a designation formerly given to fine, ternal aspect, resembles dry wood. In thin specimens of mountain leather. (f) Mountain wood, which, in the ex cipally in California and Georgia. Manuthe United States it is found prinfacturers draw their chief supply from Canada.