208 ANIMAL RESOURCES AND FISHERIES OF UNITEU STATES. 



IiirsB»oraa9 enrtlis eini>loye<l in iiiaBiulaclnires. 



Iiil'u.sorial earth, used in malciiiy; window and plate glass.* 

 Infusorial earth, used in malving sohible glass.^ 

 Infusorial earth, used in making- mortar.^ 

 Infusorial earth, used in making molds for metal casting^ 

 Infusorial earth, used in making filters.' 

 Infusorial earth, used in making d> namiti'.' 

 Infusorial earth, used in making iii-e-poof i)aeking.' 

 Infujsoilal earth, as an absorbent for oils and liquids.^ 



19. Other materials from invertebrates. 



From inasects. 



Brazilian diamond-beetles, used in jewelry. 

 Wings of beetles, used in embroidery. 



From ecliiiioderms. 



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 pnammal ^kiiis. 



Leather prepared from human skin. 



26070. Boots made from skin of man. H. &. A. Malircnholz, New York. 



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

 ments and beds. 



1137L Leather ofsoa-lion (Eumetojnas steUeri). Used by Alenti.nn Islanders 

 for manufacture of canoe. Alaska. Vincent Colycr. 



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

 net^, and for coAoriug polishing-w heels. 



15t517. Harpoon-line of walrus leather. Alaska. H. AV. Elliott. 



Seal leather, used for fine shoes and in the manufjicturc of "jiateut 

 leather," and by Eslcimos for numerous i^ui^joses. 



1018G. Seal-skin bleached by hot water. Innnit Eskimos. Arctic Ocean. 

 Capt. C. F. Hall. 

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

 R. MacFarlane. 

 24785. Indian moccasins made from skin of seal {Plioca ritulinaf) G. R. 

 Renfrew & Co., Quebec. 



' See under Part II of this catalogue. 



