PRODUCTS AND THEIR APPLICATIONS. 75 



S. TEXTILE FABRICS— Continued. 



c. Prepared from silk of insects : 



Silk of common silk- worm, (Bombyx mori.) 



Silk of Samia cecropia, Samia polyphemus, and other native 



American moths. 

 (Silk of exotic moths other than Bombyx mori, such as the 



tussah, (Bombyx pernyi and Bombyx mylitta,) the moouga, 



(Satumia assamensis,) the joree, (Bombyx religiosa,) the 



ena or arindy, (Bombyx cynthia.)) 

 Fabrics woven by the insects themselves, as Tinea padilla. 

 Silk of spiders. 



d. Prepared from byssus of mollusks. 



(Fabrics woven from byssus of the wing-shell (Pinna nobilis) 

 and other mollusks.) 



III. MATERIALS EMPLOYED IN THE ARTS AND MAN- 

 UFACTURES. 



* Hard materials. 



9. IVORY AND BONE. (This collection should include specimens of 



the various ivories and bones in their rough 

 state, and manufactured into buttons, 

 trinkets, cutlery-handles, canes, pen and 

 pencil handles, brush-handles, billiard and 

 bagatelle balls, dice, piano-keys, harness- 

 rings, combs, false-teeth, philosophical in- 

 struments, and as used by portrait painters 

 and photographers.) 

 a. Ivory of mammals: 



Tusks of walrus used for trinkets, handles, jewelry, buttons, 



XJaper-knives, counters, &c. 

 Teeth of bears, dogs, wolves, foxes, peccaries, and other large 

 mammals, used as implements, arrow-tips, and ornaments, 

 by Indians. 

 Elk-ivory used by Indians in ornamentation. 

 Tusks of mammoth elephant (Elephas primigenius) from 

 northern America and Asia, with Eskimo carvings and 

 specimens of " Siberian ivory." 



