52 ANIMAL RESOURCES OF THE UNITED STATES. 



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, &c.) 

 a. Preparation of body-oil : 



Cutting in and stowing. 



Leaning and mincing. 



Trying. 



Bailing. 



Cooling. 



Barreling. 



Refining. 

 &. Pi^eparation of bead oil. ' 



c. Preparation of spermaceti. 



d. Instrnuients and appliances of rendering wb ale oil : 

 > Boarding knives. 



Leaning-knives. 



Minciug-borse and miueing-kaives. 

 Mincing tub. 

 .' Minciug-macbine. 



Blubber-fork. 

 Try-pots. 

 Fire-pike. 

 Stirring-pole. 

 Scrap-bopper. 

 Skimmer. 

 Bailer. 

 Cooler. 

 Deck-pot. 

 Casks. 



26. EXTRACTION OF OTHER MAMMAL OILS, 



27. EXTRACTION OF BIRD AND REPTILE OILS. 



28. EXTRACTION OF FISH-OILS, (WITH MODELS OF BOILERS, 



PRESSES, CLARIFYING-VATS, &c.) 

 20. EXTRACTION OF GLUE, GELATINE, AND ISINGLASS. 



