FOR    THE    YEARS    11)01-1905,   INCLUSIVE.  319 
Spurr  (Josiah  Edward) — Continued. 
26.  Developments  at  Tonopah,  Nev.,  during  1904. 
U.  S.  Geol.  Surv.,  "Bull.  no.  260,  pp.  140-149,  1905. 
Describes  recent  mining  developments  in  this  part  of  Nevada,  and  gives  data  upon  the  char- 
acter of  the  gold  ores,  and  the  occurrence,  relations,  and  origin  of  the  veins. 
27.  Tonopah  mining  district  [Nevada]. 
Franklin  Inst,,  Jour.,  vol.  160,  pp.  1-20,  11  tigs.,  1905. 
Describes  the  geology  of  the  region,  the  systems  of  faulting,  and  the  occurrence  and  character 
of  the  gold-silver  ores. 
28.  Descriptive  geology  of  Nevada  south  of  the  Fortieth  Parallel,  and  adjacent  por- 
tions of  California. 
Mg.  Rep.,  vol.  52,  pp.  232-233,  1905. 
29.  Geology  of  the  Tonopah  mining  district,  Nevada, 
U.  S.  Geol.  Surv.,  Professional  Paper  no.  42,  295  pp.,  24  pis.,  78  figs.,  1905.  Abstract:  Eng.  & 
Mg.  Jour.,  vol.  80,  pp.  922-923,  1905. 
Describes  the  general  geology,  the  geologic  structure,  the  character,  occurrence,  and  rela- 
tions of  igneous  rocks,  mineral  veins,  and  deposits  of  gold  and  silver  ores,  the  origin  of  the 
mineral  veins,  the  economic  developments,  and  the  physiographic  features  of  the  area. 
30.  Enrichment  in  fissure  veins. 
Eng.  &  Mg.  Jour.,  vol.  80,  pp.  597-598,  1905. 
Discusses  the  localization  of  ore  deposits  in  veins  and  the  reasons  therefor. 
31.  Genetic  relations  of  the  western  Nevada  ores. 
Am.  Inst.  Mg.  Engrs.,  Bi-Mo.  Bull.,  no.  5,  pp.  939-969,  1905. 
Discusses  the  general  geology,  relations,  and  origin  of  gold  ores  of  western  Nevada. 
Spurr  (J.  E.)  and  Garrey  (G.  EL). 
1.  Preliminary  report  on  ore  dposits  in  the  Georgetown,  Colo.,  mining  district. 
U.  S.  Geol.  Surv.,  Bull.  no.  260,  pp.  99-120,  4  tigs.,  1905. 
Describes  the  general  geology  and  petrology,  and  the  character,  occurrence,  and  geological 
relations  of  the  gold  and  silver  ore  deposits. 
Standley  (P.  C),  Smith  (0.  M.)  and. 
1.  The  Pierson  Creek  mines  [Missouri]. 
See  Smith  (O   M.)  and  Standley  (P.  C.),l. 
Stanton  (Timothy  W.). 
1.  [Report  on  Cretaceous  fossils  from  the  John  Day  Basin,  Oregon.] 
Univ.  of  Cal.,  Dept.  of  Geol.,  Bull.,  vol.  2,  pp.  280-284,  1901. 
Gives  lists  of  fossils  with  notes  on  some  of  the  species  and  discusses  the  faunal  relations. 
2.  Chondrodonta,  a  new  genus   of  ostreiform  mollusks  from  the  Cretaceous,   writh 
descriptions  of  the  genotype  and  a  new  species. 
U.  S.  Nat.  Mus.,  Proc,  vol.  24,  pp.  301-307,  2  pis..  1901. 
3.  The  stratigraphic  position  of  the  Judith  River  beds.     A  correction  of  Mr.  Hatcher's 
correction. 
Science,  new  ser.,  vol.  16,  pp.  1031-1032,  1902. 
4.  A  new  fresh-water  molluscan  faunule  from  the  Cretaceous  of  Montana. 
Am.  Phil.  Soc,  Proc,  vol.  42,  pp.  188-199,  1  pi.,  1903. 
Discusses  the  stratigraphic  horizon  of  this  faunule,  and  the  occurrence  of  Cretaceous  for- 
mations and  their  correlation,  and  describes  six  new  species  of  fresh-water  mollusks. 
5.  Alpheus  Hyatt. 
Washington  Acad.  Sci.,  Proc,  vol.  5,  pp.  389-391,  1903. 
6.  Note  on  the  Cretaceous  fossils  [of  the  Bisbee  quadrangle,  Arizona]. 
U.  S.  Geol.  Surv.,  Professional  Paper  no.  21,  p.  70,  1  pi.,  1904. 
Gives  a  list  of  species  identified  and  notes  on  their  occurrence.  A  few  of  the  more  character- 
istic are  figured. 
7.  Stratigraphic  notes  on  Malone  Mountain  and  the  surrounding  region  near  Sierra 
Blanca,  Texas. 
U.  S.  Geol.  Surv.,  Bull.  no.  266,  pp.  23-33,  1905. 
Describes  the  stratigraphy  of  Cretaceous  and  Jurassic  formations  in  western  Texas. 
