78  BIBLIOGKAPHY    OF    NORTH    AMERICAN    GEOLOGY 
Crosby  (William  0.)  —  Continued. 
4.  Origin  and  relations  of  the  auriferous  veins  of  Algoma  [western  Ontario]. 
Tech.  Quart.,  vol.  15,  pp.  161-180,  8  figs.,  1902. 
Presents  the  author's  observations  in  the  region,  reviews  Dr.  Coleman's  conclusions,  and  dis- 
cusses the  origin  of  these  auriferous  veins. 
5.  A  study  of  hard-packed  sand  and  gravel. 
Tech.  Quart.,  vol.  15,  pp.  260-263,  1902. 
Describes  the  character  of  the  glacial  gravels  and  gives  the  results  of  penetration  tests. 
6.  The  hanging  valleys  of  Georgetown,  Colorado. 
Am.  Geol.,  vol.  32,  pp.  42-48,  3  pis.,  1903;  Tech.  Quart,,  vol.  16,  pp.  41-50,  4  figs.,  1903. 
Describes  certain  geographic  and  physiographic  features  and  discusses  their  origin. 
7.  A  study  of  the  geology  of  the  Charles  River  estuary  and  Boston  Harbor,  with 
special  reference  to  the  building  of  the  proposed  dam  across  the  tidal  portion  of 
the  river. 
Tech.  Quart.,  vol.  16,  pp.  64-92,  1903. 
Describes  the  geologic  formations  of  the  vicinity,  the  bedded  rock  and  glacial  deposits,  and 
the  processes  and  conditions  of  sedimentation  prevailing  now  and  in  the  recent  past. 
8.  Structure  and  composition  of  the  delta  plains  formed  during  the  Clinton  stage  in 
the  Glacial  lake  of  the  Nashua  Valley. 
Tech.  Quart.,  vol.  16,  pp.  240-254,  9  figs.,  map,  1903.  / 
9.  Notes  on  the  wells,  springs,  and  general  water  resources  of  Rhode  Island. 
U.  S.  Geol.  Surv.,  Water-Supply  and  Irrigation  Paper  no.  102,  pp.  119-125,  1904. 
10.  Memoir  of  Alpheus  Hyatt. 
Geol.  Soc.  Am.,  Bull.,  vol.  14,  pp.  504-512,  pi.  64  (por.),  1904. 
Includes  a  list  of  papers  published  by  the  subject  of  the  memoir. 
11.  Structure  and  composition  of  the  delta  plains  formed  during  the  Clinton  stage  in 
the  Glacial  lake  of  the  Nashua  Valley.     [Continuation.] 
Tech.  Quart.,  vol.  17,  pp.  37-75,  3  pis.,  17  figs.,  1904. 
Describes  the  structure  and  process  of  building  of  Glacial  delta  plains  and  the  character  and 
occurrence  of  various  Glacial  deposits,  and  discusses  their  origin. 
12.  Geology  of  the  Weston  aqueduct  of  the  Metropolitan  waterworks  in  Southboro, 
Framingham,  Wayland,  and  Weston,  Massachusetts. 
Tech.  Quart.,  vol.  17,  pp.  101-116,  1  fig.,  1904. 
Describes  the  character  and  occurrence  of  the  rocks  in  the  tunnels  of  the  Weston  aqueduct 
and  discusses  their  geologic  relations  and  their  age. 
13.  Water  supply  from  the  delta  type  of  sand  plain. 
U.  S.  Geol.  Surv.,  Water-Supply  and  Irrigation  Paper  no.  145,  pp.  161-178,  2  pis.,  3  figs.,  1905. 
Includes  an  account  of  the  formation  and  structural  features  of  sand  plains. 
14.  Underground  waters  of  eastern  United  States:  Massachusetts  and  Rhode  Island. 
U.  S.  Geol.  Surv.,  Water-Supply  and  Irrigation  Paper  no.  114,  pp..  68-75,  1905. 
Gives  a  brief  account  of  the  general  geology  and  the  water  supply  considered  by  areas. 
15.  Genetic  and  structural  relations  of  the  igneous  rocks  of  the  lower  Neponset  Val- 
ley, Massachusetts. 
Am.  Geol.,  vol.  36,  pp.  34-47,  69-83,  1905;  Tech.  Quar.,  vol.  18,  pp.  386-409,  1905. 
Describes  the  occurrence  and  history  of  the  basal  complex  of  this  region,  the  occurrence  and 
relations  of  Cambrian  strata,  and  the  occurrence,  geologic  relations,  age,  and  petrographic 
characters  of  the  gneissic  rocks  forming  the  batholite. 
16.  The  limestone-granite  contact  deposits  of  Washington  camp,  Arizona.- 
Tech.  Quart.,  vol.18,  pp.  171-190,  1905;  Am.  Inst.  Mg.  Engrs.,  Bi-Mo.  Bull.  no.  6,  pp.  1217-1238, 
1905. 
Describes  the  general  geology,  the  character,  occurrence,  and  origin  of  the  ore  deposits,  yield- 
ing chiefly  copper,  and  the  mctamorphism  of  the  contact  rocks. 
Crosby  (William  O. )  and  La  Forge  (Lawrence). 
1.  Notes  on  the  wells,  springs,  and  general  water  resources  of  Massachusetts. 
U.  S.  Geol.  Surv.,  Water-Supply  and  Irrigation  Paper  no.  102,  pp.  91-117,  1904. 
