METHODS OF PREPARATION. 
15. MANUFACTURE OF QUILL ARTIOLES—Continued. 
a, Manufacture of quills for pens: 
Dyeing. 
Shaping. 
b. Manufacture of tooth-picks. 
ce. Manufacture of floats and other articles. 
d. Manufacture of quill brush-bristles. 
16. HAIR AND WOOL WORK. 
IV. PREPARATION OF HARD TISSUES. 
17. IVORY CUTTING AND CARVING. 
a. Manufacture of handles, trinkets, billiard-balls, &e. : 
Turning and sawing. 
Polishing. 
Bleaching. 
b. Manufacture of organ and piano keys: 
Sawing. é 
Strip-sawing. 
Polishing. 
Bleaching, &e. 
c. Other processes. 
18. PREPARATION OF HORN AND HOOF. 
a. Steaming. 
6. Pressing. 
19. PREPARATION OF WHALEBONHE, 
a. Cutting and other processes. 
b. Manufacture of whip-makers’ stock and whips. 
c. Manufacture of umbrella-maker’s bone. 
d. Manufacture of ribbon-weaver’s bone. 
e. Manufacture of hat and bonnet maker’s bone. 
Jf. Manufacture of suspender-maker’s bone. 
g. Manufacture of stock-maker’s bone. 
h. Manufacture of dress and stay maker’s bone. 
4. Manufacture of billiard-table cushions. 
k. Manufacture of surgical instruments. 
l. Manufacture of whalebone-brushes. 
m. Manufacture of rosettes, woven-work, and trinkets. 
nm. Other whalebone manufactures. 
20. PREPARATION OF TORTOISE-SHELL. 
dL 
