184  BIBLIOGRAPHY    OF    NORTH    AMERICAN    GEOLOGY 
Jenney  (Walter  P. ). 
1.  The  mineral  crest. 
Eng.  and  Mg.  Jour.,  vol.  73,  pp.  825-826,  1902. 
Discusses  the  occurrence  of  ore  bodies  in  depth  in  limestone  beneath  large  masses  of  barren 
rock. 
2.  The  mineral  crest,  or  the  hydrostatic  level  attained  by  the  ore- depositing  solu- 
tions, in  certain  mining  districts  of  the  Great  Salt  Lake  Basin. 
Mg.  &  Sci.  Press,  vol.  85,  p.  297.  1902. 
3.  The  mineral  crest,  or  the  hydrostatic  level  attained  by  the  ore-depositing  solu- 
tions, in  certain  mining  districts  of  the  Great  Salt  Lake  Basin. 
Am.  Inst.  Mg.  Engrs.,  Trans.,  vol.  33,  pp.  46-50,  1903. 
4.  The  chemistry  of  ore-deposition. 
Am.  Inst.  Mg.  Engrs.,  Trans.,  vol.  33,   pp.  445-498,  1903.     Abstract:  Mg.  &  Sci.  Press,  vol.86, 
pp.  317-318,  1903. 
Discusses  the  action  of  carbon  and  hydrocarbons  in  the  formation  of  ore  deposits. 
Jennings  (E.  P.). 
1.  The  copper  deposits  of  the  Kaibab  Plateau,  Arizona. 
Am.  Inst.  Mg.  Engrs.,  Trans.,  vol.  34,  pp.  839-841,  1904. 
Describes  the  general  geology  and  occurrence  of  the  ore  deposits,  containing  copper  chiefly 
2.  Origin  of  the  magnetic  iron  ores  of  Iron  County,  Utah. 
Am.  Inst,  Mg.  Engrs.,  Trans.,  vol.  35,  pp.  338-342,  2  figs.,  1905. 
Describes  the  occurrence  and  character  of  the  magnetic  iron  ore  deposits  and  discusses 
their  origin. 
Jennings  (0.  E. ). 
1.  Notes  on  the  vegetable  tissues  in  Daemonelix. 
Carnegie  Mus..  Mem.,  vol.2,  pp.  190-191.  L905. 
Jennison  (W.  F. ). 
1.  Notes  on  the  history  of  manganese  mining  in  part  of  Nova  Scotia  and  on  some  of 
the  geological  conditions  of  the  manganese  belt  running  through  Hants  County. 
Nova  Scotia  Mg.  Soc,  .Jour.,  vol.  8,  pp.  106-109,  1901. 
Discusses  the  occurrence  ami  geological  relation-  of  the  manganese  ore  deposits. 
Jewett  (J.  J.). 
I.   Notes  on  the  topography  and  geology  of  New  Mexico. 
Kans.  Acad.  Sci.,  Trans.,  vol.  19.  pp.  1  11-149.  1905. 
Johnson  (Charles  W. ). 
1.  Description  of  two  new  Tertiary  fossils. 
Nautilus,  vol.  17,  pp.  113-144,  2  tigs.,  J 904. 
2.  Annotated  list  of  the  types  of  invertebrate  ( 'retaceous  fossils  in  the  collection  of 
the  Academy  of  Natural  Science,  Philadelphia, 
Phila.  Acad.  Nat.  Sci.,  Proc,  vol.  57,  pp.  4-28.  1905. 
Johnson  (C.  W.)  and  Grabau  (A.  W.). 
1 .   A  new  species  of  Clavilithes  from  the  Eocene  of  Texas. 
Phila.  Acad.  Nat.  Sci.,  Proc,  vol.  53,  pp.  602-603,  2  tigs.,  1902. 
Johnson  (Douglas  Wilson). 
1.  Notes  on  the  geology  of  the  saline  basins  of  central  New  Mexico. 
Abstract:  N.  Y.  Acad.  Sci.,  Annals,  vol.  1 1,  pp.  161-162,  1902. 
2.  Notes  of  a  geological  reconnaissance  in  eastern  Valencia  County,  New  Mexico 
Am.  Geol.,  vol.  29,  pp.  80-87,  2  pis.,  1902. 
Describes  the  general  physiographic  and  geologic  features  of  the  region. 
3.  On  some  Jurassic  fossils  from  Durango,  Mexico. 
Am. Geol.,  vol.30,  pp.  370-372,  1902;  Columbia  Univ.,  Geol.  Dept.,  Contr.,  vol.  10,  no.  88,  1902. 
Gives  a  brief  description  of  material  collected  by  E.  F.  Tuttle. 
