38 



Dogs of North America, extinct — Cope, 59. 



Douglas County — Washington. 1; Diller 90; Dutton, 127; Kay, 164, 165; Ledoux, 



182; Von Foullon, 303; Ward, 305-307; Austen. 6; Clarke, F. W., 26; Day, 



87; Diller, 93; Diller, 102; Diller and Kay, 118; Becker, 10; Hill, 155a; 



Stafford, 279. 

 Dredging industry in Oregon — Mining and Science Press, 227a. 

 Dredging on Rogue River— Mining and Science Press, 227b. 

 Deep wells— Darton, S6a; Fuller, 141a, 141b. 

 Eclogitcs — llohvay, 157. 

 Economic Geology. 



Age of Coos Bay coal — Blake, 16. 



Asbestos — Diller, 112. 



Am-iferous gravels — Diller, 111. 



Basin range structure — Louderback. 199. 



Borax deposits — Yale, 331; Dennis, 88b. 



Bog-iron ore and nickel — Emmons, 133. 



Bohemia mines — Diller, 104; Kimball, 168a. 



Blue River mining region — Diller, 104. 



liulletin of California State Mining Bureau — Wilkes, Chas., 326. 



Cement— Eckel, 130; Michaels, 226b. 



Charcoal — Raymond, 250. 



Coal production in the United States — Parker, 244a. 



Coal in Ceeletz River — Tj'son, 296. 



Coal supplv — Collier, 29c. 



Coal— Smith, 275. 



Coal — Ritter, 254. 



Coal— Parker, 243. 



Coal— Norton, 236. 



Coal— Newberry, 231. 



Coal— Mendenhall, 218. 



Coal, Rogue River Valley — Diller, 117. 



Coal— Diller, 101, 121a. 



Coal areas and statistics of ore, U.S.G.S. publications — Clarke and Chatard. 



Coal analysis — Clarke, 27. 



Coal fields of North Pacific — Brown, 19. 



Coal yield per year — Becker, 7. 



Coal — American Journal of Science, 1. 



Copper mines of the United States — Weed, 316. 



Copper — Reid, 252. 



Coos and Douglas Counties' resources, 278. 



Copper prospects. Riddels — Kay, 165. 



Coos Bay folio — Diller, 105. 



Cracker Creek gold district — Pardee, 242. 



Description of Minerals, Mining, History, Resources, Coal and Iron — 

 McClellan, 213. 



Dredging on Rogue River — Mining and Science Press, 227b. 



Dredging industrj^ in Oregon — Mining and Science Press, 227a. 



Elkhorn Mountain — Barrell, 6c. 



Gas near Payette, Idaho — Bell, 10a. 



Gas and oil near Vale — Washburn, 13a. 



GeoJogv and economic geology — Newberry, 230. 



Gold and silver production— U. S. G. S. Press Bull. No. 36, 1912, 297b. 



(iold and silver production — Raymond, 249. 



Gold— Barrell, 6c; Kay, 165a; Nicol, 235a. 



Gold— Mallory, 203. 



Gold — Lindgren, 196. 



(iold production — Lindgren, 194. 



Gold and silver, Idaho — Lindgren, 191. 



Gold. Blue Mountains — Lindgren, 190. 



(Jold and silver — V. S. (!. S. iiublications, 150. 



Gold region of California and Oregon — Blake, 14 and 15. 



