ANIMAL RESOURCES AND FISHERIES OF UNITED STATES. 173 



VI. PREPARATION OF HARD TISSUES. 



17. IVORY CUTTING AND CARVING. 



manufacture of handles, trinkets, billiard-balls, &c. 



Turning and sawing. 



Polishing. 



Bleaching. 



manufacture of organ and piano keys. 



Sawing. 

 Strip-sawing. 

 Polishing. 

 Bleaching. &c. 



Other processes. 



18. PREPARATION OF HORN AND HOOF. J 

 Steaming* 1 

 Pressing-. 1 



19. PREPARATION OF WHALEBONE.' 



Cutting and other processes. 1 



manufacture of w hip-makers' stock and whips, 

 manufacture of umbrella-makers' bone, 

 manufacture of ribbon-weavers' bone, 

 manufacture of hat and bonnet makers' bone, 

 manufacture of suspender-makers' bone, 

 manufacture of stock-makers' bone, 

 manufacture of dress and stay makers' bone, 

 manufacture of billiard-table cushions, 

 manufacture of surgical instruments, 

 manufacture of whalebone brushes, 

 manufacture of rosettes, woven work, and trinkets. 



1 These processes are illustrated in part by the specimens, showing the horn, whale- 

 bone, and tortoise-shell, in various stages of preparation, exhibited in Section D. 



