man]  MINERAL    RESOURCES    FOR    1882.  51 
Vanadium,  p.  449. 
Structural  materials,  pp.  450-464. 
Building  stone,  pp.  450-457. 
I  Wick,  tile,  etc.,  pp.  457-458. 
Lime.  pp.  458-459. 
Cement,  pp.  459-464. 
S<  ►apstone,  p.  464. 
Marble  dust,  p.  464. 
Clays,  pp.  465-475. 
Fire-clay  in  the  eastern  division,  by  F.  A.  Wilber,  pp.  465-469. 
Pottery  clay  and  kaolin  in  the  eastern  division,  pp.  469-472. 
(Mays  of  the  Rocky  mountain  division,  pp.  472-475. 
(  lays  of  the  Pacific  coast,  p.  475. 
Abrasive  materials,  pp.  476-481. 
Corundum  and  emery,  by  Henry  Gannett,  pp.  476-477. 
Buhrstones,  p.  477. 
Bereagrit,  by  M.  C.  Read, pp. 478-479. 
Grindstones,  p.  479. 
Infusorial  earth,  pp.  479-480. 
Pumice-stone,  p.  480. 
Carbons,  pp.  480-481. 
Precious  stones,  pp.  482  503. 
American  gems  and  precious  stones,  by  <  reo.  F.  Kunz,  pp.  183-  199. 
The  discovery  of  emeralds  in  North  Carolina,  by  W.  E.  Hidden,  pp.  500-502. 
Hiddenite,  the  new  emerald-green  gem,  by  W.  E.  Hidden,  pp.  502-503. 
Fertilizers,  pp.  504  531 , 
The  phosphate  deposits  of  South  ( !arolina,  by  <  >tto  A.  Moses,  pp.  504-521. 
Apatite,  by  F.  A.  Wilber,  p. 521. 
Marls, by  F.  A.  Wilber, pp. 522  526. 
Gypsum,  pp.  526-  531. 
( iommercial  fertilizers,  p.  531. 
Salt,  pp.  532-565. 
The  salines  of  Louisiana,  by  E.  W.  Hilgard,  pp. 554-565. 
Borax,  pp.  566-577. 
Sulphur,  pp.  578-579. 
Barytes,  pp.  580-581. 
Strontia,  p.  582. 
Mica,  pp.  583-584. 
Talc,  p.  585. 
Quartz,  p.  586. 
Fluorspar,  p.  587. 
Asbestus,  pp.  588-589. 
Graphite, by  John  A.  Walker,  pp. 590-594. 
Lithographic  stone,  pp.  595-596. 
Niter,  pp.  597-598. 
Nitrate  of  soda,  pp.  599-600. 
Carbonate  of  soda,  pp.  601-602. 
Sulphate  of  soda,  pp.  603-604. 
Asphaltum,  p.  605. 
Alum,  p.  606. 
Copperas,  p.  607. 
Cryolite,  p.  608. 
Ozocerite,  p.  609. 
