CONTENTS. 
Page. 
Letter  of  transmittal 9 
Introduction  by  C.  W.  Hayes 11 
Investigation  of  metalliferous  ores,  by  S.  F.  Emmons 18 
Investigation  of  nonmetalliferous  economic  minerals,  by  C.  W.  Hayes..         25 
Gold  and  silver 28 
Alaska: 
The  Juneau  gold  belt,  by  Arthur  C.  Spencer 28 
Placer  mining  in  Alaska  in  1903,  by  Alfred  H.  Brooks 43 
The  Porcupine  placer  mining  district,  by  Charles  M.  Wright 60 
Gold  placers  of  the  Fairbanks  district,  by  L.  M.  Prindle 64 
The  Kotzebue  placer  gold  field  of  Seward  Peninsula,  by  Fred  H. 
Moffit 74 
Maine  and  Vermont: 
Quartz  veins  in  Maine  and  Vermont,  by  G.  O.  Smith 81 
Nevada: 
Preliminary  report  on  the  ore  deposits  of  Tonopah,  by  J.  E.  Spurr. . .         89 
Ore  deposits  of  the  Silver  Peak  quadrangle,  by  J.  E.  Spurr Ill 
Notes  on  the  geology  of  the  Goldfields  district,  by  J.  E.  Spurr 118 
Oklahoma: 
Reported  gold  deposits  of  the  Wichita  Mountains,  by  H.  Foster  Bain.       120 
South  Dakota: 
Ore  deposits  of  the  northern  Black  Hills,  by  J.  D.  Irving 123 
Utah: 
Progress  report  on  the  Park  City  mining  district,  by  J.  M.  Boutwell .       141 
Geological  Survey  publications  on  gold  and  silver 151 
Quicksilver,  tin,  tungsten,  chromium,  and  nickel 154 
Alaska: 
Tin  deposits  of  the  York  region,  by  Arthur  J.  Collier 154 
Geological  Survey  publications  on  quicksilver,  platinum,  tin,  tungsten, 
chromium,  and  nickel 168 
Copper 169 
California: 
Mining  and  mineral  resources  in  the  Redding  quadrangle  in  1903,  by 
J.  S.  Diller 169 
Georgia: 
Copper  deposits  in  Georgia,  by  Walter  Harvey  Weed 180 
Notes  on  the  Seminole   copper  deposits  of  Georgia,  by  Thomas  L. 
Watson 182 
New  Jersey: 
The  Griggstown,  N.  J.,  copper  deposit,  by  Walter  Harvey  Weed 187 
Vermont: 
Notes  on  the  copper  mines  of  Vermont,  by  Walter  Harvey  Weed 190 
Publications  on  copper 200 
3 
