52 
21. 
22. 
23. 
24. 
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.) 
29. EXTRACTION OF GLUE, GELATINE, AND LSINGLASS, 
ANIMAL RESOURCES OF THE UNITED STATES. 
PREPARATION OF FISH-SCALE WORK. 
PREPARATION OF NACRE. 
PREPARATION OF CORAL. 
PREPARATION OF OTHER HARD TISSUES 
Y. OILS AND GELATINES. 
. 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. 
b. Preparation of head-oil. 
¢. Preparation of spermaceti. 
d. Instruments and appliances of rendering whale-oil: 
Boarding- knives. 
Leaning-knives. 
Mincing-horse and mincing-koives. 
Mincing-tub. 
Mincing-machine. 
Blubber-fork. 
Try-pots. 
Fire-pike. 
Stirring-pole. 
Scrap-hopper. 
Skimmer. 
Bailer. 
Cooler. 
Deck-pot. 
Casks. 
