TABLE OF CONTENTS. 



FISH OILS, FATS, AND AVAXES. 



Page. 



General review _ 183 



The wliale oils: 



Brief review of whaling industries. . . 186 



The blubber and its yield of oil 189 



Conversion of the blubber into oil 193 



Refining sperm oil and whale oil 199 



Porpoise and blact-flsh oils 204 



Oils from seals, walrus, etc. : 



Seal oils 209 



Sea-elephant oil 211 



Walrus oil. 214 



Oil from sea-lions and fur-seals 21.5 



Oils from livers of cod and related species : 



Sources of supply 216 



Description of livers and resulting oils 218 



Preparation of medicinal oil 221 



Production of curriers' oil 225 



Oils from the livers of sharks and related 



species ^,-... 227 



178 



FISH OILS, FATS, AND WAXES— continued. 

 Page. 



Menhaden oil _ _ 233 



Herring oil _ :i36 



Oil from waste flsh _ 239 



Oil from fish heads 240 



Oil from viscera of fish 211 



Miscellaneoiis oils 242 



Spermaceti refining and maniif actui'e 214 



Ambergris ;."4r 



FERTILIZERS. 



General review — 253 



The menhaden industry: 



History and extent of the industi-y . . . 256 



Cooking and pressing the flsh 259 



Treatment of the scrap 265 



Fertilizers from fish waste or refuse 269> 



Fertilizers from crustaceans 273 



Agricultural lime from mollusk shells . . . 274 



Seaweeds as fertilizers 275 



