208 AIS'IMAL RESOURCES AND FISHERIES OF UNITED STATES, 



Infusorial earths employed in manufactures. 



Infusorial earth, used in making window and plate glass. 1 

 Infusorial earth, used in making soluble glass. 1 

 Infusorial earth, used in making mortar. 1 

 Infusorial earth, used in making molds for metal casting. 1 

 Infusorial earth, used in making filters. 1 

 Infusorial earth, used in making dynamite. 1 

 Infusorial earth, used in making fire-poof packing. 1 

 Infusorial earth, as an absorbent for oils and liquids. 1 



19. OTHER MATERIALS FROM INVERTEBRATES. 



From insects. 



Brazilian diamond-beetles, used in jewelry. 

 Wings of beetles, used in embroidery. 



From eehinoderms. 



Spines of echinoids, used for slate-crayons, 



Flexible materials. 



20. LEATHERS. (Embracing the hides in a rough state, in the various 

 stages of dressing, and manufactured, into shoe-leather, parch- 

 ment, vellum, binders' leather, thongs, &c. 



Leather prepared from mammal skins. 



. Leather prepared from human skin. 



28070. Boots made from skin of man. H. & A. Mahrenholz, New York. 



Sea-lion leather, used by Eskimos to cover bidarkas, and for gar- 

 ments Jind beds. 



11:}? 1. Leather of sea-lion (Eumetopim xteUeri). Used by Aleutian Islanders 

 for manufacture of canoe. Alaska. Vincent Colyer. 



Walrus leather, used by Eskimos for harness, tables, thongs, seal- 

 nets, and for covering polishing-whe^ls. 



15617. Harpoon-line of walrus leather. Alaska. H. W. Elliott. 



Seal leather, used for fine shoes and in the manufacture of a patent 

 leather," and by Eskimos for numerous purposes. 



10188. Seal-skin bleached by hot water. Innuit Eskimos. Arctic Ocetin. 



Capt. C. F. Hall. 

 11015. Seal-skin leather tanned by Eskimos. Mackenzie's River district. 



R. MaeFarlaiie. 



24785. Indian moccasins made from skin of seal (Phoca vitulinaf) G. R. 

 Renfrew &, Co., Quebec. 



1 See under Part II of this catalogue. *" 



