FOR   THE    YEARS    1901-1905,   INCLUSIVE.  353 
Weed  (Walter  Harvey) — Continued. 
14.  Gold  mines  of  the  Marysville  district,  Montana. 
U.  S.  Geol.  Surv.,  Bull.  no.  213,  pp.  88-89,  1903. 
Gives  a  brief  history  of  the  development  of  the  field,  its  geological  features,  and  the  occur- 
rence of  the  ore  bodies. 
15.  Tin  deposits  at  El  Paso,  Tex. 
U.'S.  Geol.  Surv.,  Bull.  no.  213,  pp.  99-102, 1903. 
Describes  briefly  the  geologic  structure  and  formation  of  the  Franklin  Mountains,  the  char- 
acter and  occurrence  of  the  ores,  and  the  mining  developments. 
16.  Ore  deposits  at  Butte,  Mont. 
U.  S.  Geol.  Surv.,  Bull.  no.  213,  pp.  170-180,  1903. 
Describes  the  mining  development  of  the  region,  the  character  and  occurrence  of  the  rocks 
and  structural  features  of  the  district,  and  the  character,  occurrence,  and  origin  of  the  ore 
deposits  and  the  vein  systems. 
17.  Copper  deposits  of  the  Appalachian  States. 
U.  S.  Geol.  Surv.,  Bull.  no.  213,  pp.  181-185,  1903. 
Describes  the  occurrence  of  deposits  of  copper  ores  in  New  Jersey,  Maryland,  Virginia,  North 
Carolina,  and  Tennessee. 
18.  Copper  deposits  of  New  Jersey. 
N.  J.  Geol.  Surv.,  Ann.  Rept.  for  1902,  pp.  125-139,  1903. 
Describes  the  occurrence,  character,  and  structural  conditions  of  the  copper  ores  and   the 
mining  operations,  and  discusses  the  origin  of  the  ores. 
19.  Ore  deposits  near  igneous  contacts. 
Am.  Inst.  Mg.  Engrs.,  Trans.,  vol.  33,  pp.  715-746,  1  fig.,  1903. 
Gives  a  genetic  classification  of  ore  deposits,  discusses  formation  of  ores  in  contact  zones,  and 
especially  the  origin  of  contact  metamorphic  deposits. 
20.  Ore  deposition  and  vein  enrichment  by  ascending  hot  waters. 
Am.  Inst.  Mg.  Engrs.,  Trans.,  vol.  33,  pp.  747-754,  1903. 
21.  Secondary  enrichment  at  Cripple  Creek  [Colorado]. 
Eng.  &  Mg.  Jour.,  vol.  75,  pp.  553-554,  1  fig.,  1903. 
22.  Cross  vein  ore  shoots  and  fractures. 
Eng.  &  Mg.  Jour.,  vol.  76,  p.  193,  1903. 
Describes  vein  structure  and  discusses  its  origin. 
23.  The  Cananea  ore  deposits  [Mexico]. 
Eng.  &  Mg.  Jour.,  vol.  76,  p.  383,  1903. 
Gives  observations  upon  the  geology  and  the  occurrence  of  the  copper-ore  deposits. 
24.  [Classification  of  ore  deposits.] 
Abstract:  Science,  new  ser.,  vol.  17,  pp.  273-274, 1903. 
25.  Gypsum  deposits  in  Montana. 
U.  S.  Geol.  Surv.,  Bull.  no.  223,  pp.  74-75,  1904. 
Describes  character,  occurrence,  and  geologic  relations  of  gypsum  deposits  in  Montana. 
26.  Copper  deposits  in  Georgia. 
U.  S.  Geol.  Surv.,  Bull.  no.  225,  pp.  180-181,  1904. 
Describes  occurrence  and  character  of  copper  ores. 
27.  The  Griggstown,  N.  J.,  copper  deposit. 
U.  S.  Geol.  Surv.,  Bull.  no.  225,  pp.  187-189, 1904. 
Describes  the  general  geology  and  the  occurrence  and  character  of  the  copper-ore  deposits. 
28.  Notes  on  the  copper  mines  of  Vermont. 
U.  S.  Geol.  Surv.,  Bull.  no.  225,  pp.  190-199,  1904. 
Describes  the  general  geology,  the  character  and  occurrence  of  the  copper-ore  deposits,  and 
the  mining  developments 
29.  Original  native  gold  in  igneous  rocks. 
Eng.  &  Mg.  Jour.,  vol.  77,  pp.  440-441,  1904. 
Bull.  301—06 23 
