FISHERIES OF THE UNITED STATES. 239 



III. MATERIALS EMPLOYED IN THE ARTS AND MANU- 

 FACTURES. 



12. Isinglass, (p. 154.) 

 ISINGLASS. 



42921. American isinglass. C. Norwood & Sons, Manning Bros., agents, 



Boston, Mass. 

 42990. Isinglass made from sounds of sturgeon. Scliacht & Frnechtnicht, 



Sandusky, Ohio. 



13. Gelatines, (p. 150.) 

 GELATINES. 



42944. Fish glue, from tisli and bones. Charles Alden, Gloucester, Mass. 



18. Fertilizers, (p. 102.) 

 ARTIFICIAL GUANOS. 



42942. Fish guano, from refuse of boneless tish. Charles Alden, Glouce.ster, 



Mass. 



42943. Fish guano, from ''gurry," or refuse of fresh fish. Charles Alden, 



Gloucester, Mass. 

 42970. Shrimp-chatf, winnowed from dried shrimps by Chinese in California, 

 and exported to China as a fertilizer for tea-plants. The meat of 

 the shrimp is eaten. Bay View Chinese Colony, San Francisco, 

 Cal. 



15. Oils and fats. (p. 157.) 



FISH-OILS. (p. 100.) 

 Oil of other fishes. 



42992. Oil from sturgeon. Schacht & Frnechtnicht, Sandusky, Ohio. 



SECTION F. 



RESEARCH, PROTECTION, AND CULTURE. 



III. PROPAGATION, (p 2i4.) 



APPARATUS USED IN THE TRANSPORTATION OF FISH. (218.) 



39499. Ferguson's aerating apiniratus. T. B. Ferguson. U. S. Fish Com- 

 mission. 

 This apparatus is screwed into the top of a carrying can, and a small 

 stream of water coming in from a tank or reservoir above draws 

 air in through the side aperture and discharges it at the bottom 

 of the tank, when it rises to the surface in a foam. Apparatus of 

 this kind was used in the Boston aquarium of W. E. Baker in 1874, 

 and by the U. S. Fish Commissiou in 1875 in the aquaria of its 

 Sea-coast Laboratory at Wood's HoU, Mass. It was applied to fish- 

 carriers bv T. B. Ferguson in 1^77. 



