PRODUCTS AND THEIR APPLICATIONS, 85 
20. LEATHERS—Continued. 
c. Prepared from bird-skins : (Eskimos.) 
Hider-leather. 
Auk-leather. 
(Ostrich-leather used by Arabians.) 
d. Prepared from reptile skins: 
Alligator-leather. 
Rattlesnake-leather. 
Other snake-leatier. 
e. Prepared from fish-skins: 
Leather prepared from scaled fish by Indians. 
Eel-leather, (pigtails, queues, flail-thongs.) 
Shark-leather, (shagreen used for coverings and by the 
Alaska Indians for boot-soles.) 
Sturgeon-leather. 
(Skins of Diodon used in making helmets.) 
Stomach membranes of halibut used in Greenland for win- 
dow-transparencies. 
J. Leather waste: 
Paper manufactured from waste. 
Glue manufactured from waste, (see under 24.) 
Prussian blue made from leather waste, (see under 30.) 
21. HAIR AND WOOL. 
a. Hair used in weaving and felting, (see under 8.) 
b. Hair used for wigs and ornament: 
Human hair as an article of commerce, with specimens of 
switches and wigs, and also of the trade imitations of hair 
in jute, horse-hair, &c. 
Goats’ wool as employed in manufacture of wigs and 
perukes. 
Horse-hair employed for military accoutrements and for 
standards, (Turkey.) 
Human scalp-locks as Indian trophies. 
Scalps of animals as trophies. 
e. Hair and bristles used for brushes, (embracing the commer- 
cial hair and bristles, assorted and unassorted, and specimens 
of the manufactured articles :) 
Hair of skunk used for fine brushes. 
Hair of bear used for varnishing-brushes. 
