1.16  BIBLIOGRAPHY    OF    NORTH    AMERICAN    GEOLOGY 
Emerson  (J.  S. ). 
1.  Some  characteristics  of  Kau  [Hawaii]. 
Am.  Jour.  Sci.,  4th  ser.,  vol.  14,  pp.  431-439,  1902. 
Describes  the  physiography  of  the  region  and  discusses  the  evidences  regarding  the  source  of 
certain  eruptions. 
Emerson  (Philip). 
1.  Note  on  glacial  topography  in  central  New  Hampshire. 
Appalachia,  vol.  10,  pp.  299-303,  1904. 
Describes  physiographic  features  in  central  New  Hampshire. 
Emmens  (Newton  W.). 
1.  The  Bingham  mining  camp  [Utah]. 
Mg.  Mag.,  vol.  12,  pp.  457-464,  5  figs.,  1905. 
Includes  brief  notes  on  the  geology,  and  the  occurrence  and  character  of  the  copper  ores. 
Emmons  (N.  H.). 
1.  The  value  of  ores  in  Mexico. 
Mg.  &  Sci.'  Press.,  vol.  84,  p.  102,  1902. 
Emmons  (Samuel  Franklin). 
1.  The  secondary  enrichment  of  ore  deposits. 
Am.  Inst.  Mg.  Engrs.,  Trans.,  vol.  30,  pp.  177-217,  1901. 
Discusses  the  process  of  the  secondary  enrichment  of  sulphide  ore  bodies  by  transference  and 
reconcentration  of  the  alteration  products  of  the  original  vein  materials  by  descending 
surface  waters  and  the  chemical  reactions  which  take  place.  Describes  the  author's 
observations  in  various  mining  districts  and  discusses  their  bearing  on  these  problems. 
2.  Notes  on  two  desert  mines  in  southern  Nevada  and  Utah. 
Abstract:  Science,  new  ser.,  vol.  13,  pp.  426-427,  1901. 
Contains  abstract  of  paper  read  before  the  Geological  Society  of  Washington. 
3.  The  Delamar  and  the  Horn-Silver  mines;  two  typos  of  ore-deposits  in  the  deserts 
of  Nevada  and  Utah. 
Am.  Inst.  Mg.  Engrs.,  Trans.,  vol.  31,  pp.  658-683,  in  figs.,  1902. 
Describes  topogra jili y  and  geologic  structure  of  the  region,  characters  of  the  ore  and  history 
and  de\  elopment  of  these  mines. 
4.  [In  discussion  of  "The  origin  of  ore-deposits."] 
Am.  Inst.  Mg.  Engrs.,  Trans.,  vol.  31,  pp.  9"53-959,  1902. 
5.  Clarence  King. 
Am.  Jour.  Sci.,  4th  ser.,  vol.  13,  pp.  224-237,  1902. 
Includes  an  account  of  his  life  and  work  and  a  bibliography  of  Ids  publications. 
6.  Tributes  to  Clarence  King. 
Eng.  &  Mg.  Jour.,  vol.  73,  pp.  3-5,  por.,  1902. 
Gives  an  account  of  his  life  and  work  and  a  list  of  his  publications. 
7.  The  U.  S.  Geological  Survey  in  its  relation  to  the  practical  miner. 
Eng.  &  Mg.  Jour.,  vol.  74,  p.  43,  1902. 
8.  [Discussion  of  James  W.  Malcolmson's  paper  on  "The  Sierra  Mojado,  Coahuila, 
Mexico,  and  its  ore-deposits."] 
Am.  Inst.  Mg.  Engrs.,  Trans.,  vol.  32,  pp.  56G-567,  1902. 
Discusses  the  age  of  the  beds,  the  structure  of  the  mountains,  and  the  distribution  of  the  ores. 
9.  The  Little  Cottonwood  granite  body  of  the  Wasatch  Mountains. 
Am.  Jour.  Sci.,  4th  ser.,  vol.  16,  pp.  139-147,  1  fig.,  1903. 
Discusses  the  geologic  relations  and  age  of  this  granitic  mass. 
10.  Investigation  of  metalliferous  ores. 
U.  S.  Geol.  Surv.,  Bull.  no.  213,  pp.  15-28,  1903. 
Describes  the  character  and  scope  of  the  economic  work  of  the  U.  S.  Geological  Survey,  gives 
brief  outlines  of  economic  publications  on  metalliferous  deposits  by  the  Survey  during  1901, 
and  enumerates  by  geographic  areas  the  work  in  hand. 
