174 ANIMAL RESOURCES AND FISHERIES OF UNITED STATES. 



Other ^ haHetooBac BMamifactiires. 



20. Preparation of tortoise-shell.^ 



21. Preparation of fish-scale work. 



22. Preparation of nacre. 



23. Preparation of coral. 



24. Preparation of other hard tissues. 



V. OILS AND GELATINES. 



25. Extraction of whale-oil (with models of try-works, 

 clarifying-vats, etc.). 



PreparatioM of body-oil. 



Cutting in and stowing 



Leaning and mincing. 



Trying. 



Bailing. 



Cooling. 



Barreling. 



Eefining. 



Preparation of head-oil. 



PreparatflOBi of spermaceti* 



EiistrMMieEits and appliances of rendering" ivhale-oil. 



Boarding-knives.^ 



Leaning-knives.^ 



Mincing-horse and mincing-lmives. 



Mincing-tub. 



Mincing-machine. 



Blubber-fork.^ 



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

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

 "Arranged with the knives. 

 ''Arranged with the hooks. 



