174 ANIMAL RESOURCES AND FISHERIES OF UNITED STATES. 



Other whaletoone manufactures. 



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-YATS, ETC.). 



Preparation of body-oil. 



Cutting in and stowing 



Leaning and mincing. 



Trying. 



Bailing. 



Cooling. 



Barreling. 



Refining. 



Preparation of head-oil. 

 Preparation of spermaceti. 



Instruments and appliances of rendering: whale-oil. 



Boarding-knives. 2 



Leaning-knives. 2 



Mincing-horse and mincing-knives. 



Mincing-tub. 



Mincing-machine. 



Blubber-fork. 3 



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. 



2 Arranged with the knives. 



3 Arranged with the hooks. 



