. Report of the Commissioner for the year ending June 30, 1902. erm oil and whale oil 199 Porpoise and black-fish oils 204 Oils from seals, walrus, etc.: Seal oils 209 Sea-elephant oil. 211 Walrus oil. 214 Oil from sea-lions and fur-seals 215 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 FISH OILS, FATS, AND WAXES—continued. Page. Menhaden oil 232 Herring oil. 236 Oil from waste fish 239 Oil from fish heads 24
. Report of the Commissioner for the year ending June 30, 1902. erm oil and whale oil 199 Porpoise and black-fish oils 204 Oils from seals, walrus, etc.: Seal oils 209 Sea-elephant oil. 211 Walrus oil. 214 Oil from sea-lions and fur-seals 215 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 FISH OILS, FATS, AND WAXES—continued. Page. Menhaden oil 232 Herring oil. 236 Oil from waste fish 239 Oil from fish heads 240 Oil from viscera of fish. 211 Miscellaneous oils. 242 Spermaceti refining and manufacture 214 Ambergris 24 7 FERTILIZERS. General review 253 The menhaden industry: History and extent of the 256 Cooking and pressing the fish. 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 fertilizei-s 275 178 Report U. S. F. C. 1902. PLAT£ ^ 5 cc c I- 3 CO S, Q c z , AQUATIC PRODUCTS IN ARTS AND INDUSTRIES. By Charleys H. Stevenson. PREFATORY NOTE. The diversity and magnitude of the industries based on tlie utiliza-tion and manufacture of aquatic i^roducts are not fully a previous publication of this Commission^ the great variety offishery products used for food and their methods of preparation werediscussed. In addition to the numerous items of food articles, thematerials employed in the arts and industries compare favorably invariety and interest with similar products of the land. These may beroughly separated into five classes, viz, (1) oils, fats, and waxes;(2) fertilizers from aquatic products; (3) skins of aquatic animalsand their products of furs and leathers; (4) the hard substances, asshells, scales, bones, ivories, etc., and (5) miscellaneous articles notproperl}^ classed with any of the foregoing, as glue, isinglass, seaweeds,spong
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