92  BIBLIOGRAPHY    OF    NORTH    AMERICAN    GEOLOGY 
Davis  (William  Morris)— Continued. 
60.  Leveling  without  baseleveliug. 
Science,  new  ser.,  vol.  21,  pp.  825-828,  1905. 
Discusses  the  formation  of  level  plains  without  baseleveling. 
61.  [The  Colorado  Canyon.  ] 
Abstract:  Science,  new  ser.,  vol.  21,  p.  860,  1905. 
Davison  (Charles). 
1.  A  study  of  recent  earthquakes. 
London,  The  Walter  Scott  Publishing  Co.,  1905.     xii,  355  pp.,  80  figs. 
Includes  an  account  of  the  Charleston  earthquake. 
Davison  (J.  M.). 
1.  Internal  structure  of  cliftonite. 
Am.  Jour.  Sci.,  4th  ser.,  vol.  13,  pp.  467-468,  1902. 
Describes  occurrence  and  crystallographic  characters. 
Dawson  (George  M.). 
1.  Summary  report  on  the  operations  of  the  Geological  Survey  for  the  year  1898. 
Can.  Geol.  Surv.,  new  ser.,  vol.  11,  Rept.  A,  208  pp.,  1901,  published  separately  in  1899. 
2.  Geological  record  of  the  Rocky  Mountain  region  in  Canada. 
Geol.  Soc.  Am.,  Bull.,  vol.  12,  pp.  57-92, 1901. 
Gives  an  account  of  the  physiographic  features  and  a  table  of  geologic  formations  of  the 
region.    Describes  the  character  and  occurrence  of  the  rocks  of  the  subdivisions  of  the 
Archean,  Paleozoic,  Mesozoic,  and'Cenozoic  eras. 
3.  Physical  history  of  the  Rocky  Mountain  region  in  Canada. 
Science,  new  ser.,  vol.  13,  pp.  401-407, 1901. 
Contains  portion  of  address  delivered  before  the  Geological  Society  of  America. 
4.  Summary  report  on  the  operations  of  the  Geological  Survey  of  Canada  for  the 
year  1900. 
Can.  Geol.  Surv.,  Summ.  Rept.  for  1900,  203  pp.,  map,  1901. 
5.  Summary  report  on  the  operations  of  the  Geological  Survey  for  the  year  1899  by 
the  Director. 
Can.  Geol.  Surv.,  Ann.  Rept.,  new  ser.,  vol.  12,  pp.  1A-224A,  1902. 
Day  (Arthur  L. ). 
1.  The  study  of  minerals  in  the  laboratory. 
Abstract:  Science,  new  ser.,  vol.,  19,  pp.  733-734,  1904. 
Describes  experiments  upon  the  melting-point  determinations  of  feldspars. 
Day  (Arthur  L.)  and  Allen  (E.  T.). 
1.  The  isomorphism  and  thermal  properties  of  the  feldspars. 
Am.  Jour.  Sci.,  4th  ser.,  vol.  19,  pp.  93-112,  1  pi.  and  22  figs.,  1905. 
2.  The  isomorphism  and  thermal  properties  of  the  feldspars.     Part  I,  Thermal  study. 
Carnegielnst.  of  Wash.,  Publ.  no.  31,  pp.  13-75,  24  figs.,  1905. 
Day  (Arthur  L.)  and  Shepherd  (E.  S.). 
1.  The  phase-rule  and  conceptions  of  igneous  magmas.     Discussion  of  paper  by  Mr. 
T.  T.  Read. 
Econ.  Geol..  vol.  1,  pp.  286-289,  1905. 
Day  (Arthur  L.),  Becker  (G.  F.)  and. 
1.  The  linear  force  of  growing  crystals. 
See-Becker  (G.  F.)  and  Day  (A.  L.),  1. 
Day  (David  T.). 
1.  Notes  on  the  occurrence  of  platinum  in  North  America. 
Am.  Inst.  Mg.  Engrs.,  Trans.,  vol.  30,  pp.  702-708,  1901. 
Describes  the  geographic  distribution  of  platinum  and  its  occurrence  on  the  Pacific  coast. 
2.  Experiments  on  the  diffusion  of  crude  petroleum  through  fuller's  earth. 
Abstract:  Science,  new  ser.,  vol.  17,  pp.  1007-1008, 1903. 
