174 ANIMAL RESOURCES AND FISHERIES OF UNITED STATES. 



OtlaeB' ^ liaBeboiae laianiiiactiires. 



20. Pkepaeation 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.). 



Prep.iraHon of l>ody-oil. 



Cutting ill and stowing? 



Leaning and mincing. 



Trying. 



Bailing. 



Cooling. 



Barreling. 



Refining. 



Prr|>aB*alBOii of head-oil. 

 PB'ei>arayo0Di of xpci'iiiareti. 



BiBolB'tieiiccBtiN aiael aB>plliagi<'C'«^ of i*eiidet*iiig whale-oil. 



Boarding-knives.* 



Leaning-knives.* 



Mincing liorse and mincing-knives. 



Mincing-tub. 



Mincing-machine. 



Blubber-fork.^ 



'These procossos are illustrated in part by the specimens, showing the horn, whale- 

 bone, and tortoise-shell, in various stages of iJrcparatiou, oxhiViited in Section D. 

 -Arranged with the knives. 

 ■" Arranged with the hookti. 



