FOR    THE    YEARS    1901- L905,  INCLUSIVE.  45 
Branner  (John  0.). 
1.  Origin  of  ripple  marks. 
Jour.  Geol.,  vol.  9,  pp.  535-536,  1901. 
Suggests  that  the  origin  of  large  ripple  marks  may  be  found  in  the  seaward  extension  of 
beach  cusps. 
2.  The  zinc  and  lead  deposits  of  north  Arkansas. 
Am.  Inst.  Mg.  Engrs.,  Trans.,  vol.  31,  pp.  572-603,  33  rigs,  [maps,  sections,  etc.],  1902. 
Describes  occurrence,  mode  of  formation,  and  relations  of  bedded  ores  to  the  geologic  struc- 
ture of  the  region,  and  gives  analyses  of  some  of  the  ores. 
3.  [In  discussion  of  paper  by  Eric  Hedburg  on  "The  Missouri  and  Arkansas  zinc 
mines. ' '  ] 
Am.  Inst.  Mg.  Engrs.,  Trans.,  vol.  31,  pp.  1013-1014,  1902. 
4.  Syllabus  of  a  course  of  lectures  on  elementary  geology.     Ed.  2. 
369  pp.,  25  pis.,  109  figs.,  1902. 
5.  A  topographic  feature  of  the  hanging  valleys  of  the  Yosemite  [California]. 
Jour.  Geol.,  vol.  11,  pp.  547-553,  5  figs.,  1903. 
Gives  an  explanation  for  the  position  of  the  falls. 
6.  Notes  on  the  geology  of  the  Hawaiian  Islands. 
Am.  Jour.  Sex.,  4th  ser.,  vol.  16,  pp.  301-316,  1  pi.,  13  figs.,  1903 
Describes  topographic  features  and  discusses  their  origin. 
7.  Memoir  of  James  E.  Mills. 
Geol.  Soc.  Am.,  Bull.,  vol.  14,  pp.  512-517,  1  pi.  (por.),  1904. 
Includes  a  list  of  papers  written  by  the  subject  of  the  memoir. 
8.  Natural  mounds  or  hog-wallows. 
Science,  new  ser.,  vol.  21,  pp.  514-517,  1905. 
Discusses  the  occurrence,  character,  and  origin  of  these  mounds. 
9.  The  university  training  of  engineers  in  economic  geology. 
Econ.  Geol.,  vol.  1,  pp.  289-294, 1905. 
Branner  (John  C. )  and  Newsom  (John  F. ). 
1.  The  phosphate  rocks  of  Arkansas. 
Ark.  Agr.  Exp.  Sta.,  Bull.  no.  74,  123  pp.,  23  figs.,  1902. 
Describes  the  character  and   geographic  and  geologic  occurrence  of   phosphate  rock  in 
Arkansas. 
Branson  (E.  B. ). 
1.  Notes  on  some  Carboniferous  cochliodonts  with  descriptions  of  seven  new  species. 
Jour.  Geol.,  vol.  13,  pp.  20-34,  2  pis.   1905. 
2.  Structure  and  relationships  of  American  Labyrinthodontidae. 
Jour.  Geol.,  vol.  13,  pp.  568-610,  24  figs.,  1905. 
Brauns  (R.). 
1.  Asche  des  Vulkans  Sta.  Maria  in  Guatemala. 
Centralbl.  f.  Min.,  pp.  132-134,  1903. 
Describes  the  composition  of  ashes  ejected  by  St.  Maria  in  Guatemala. 
2.  Ueber  die  Asche  des  Vulkans  Sta.  Maria  in  Guatemala. 
Centralbl.  f.  Min.,  p.  290,  1903. 
Discusses  differences  and  their  explanation  in  composition  of  volcanic  ashes  from  St.  Maria 
in  Guatemala  found  by  several  investigators. 
Breed  (Robert  S.). 
1.   "The  Sunset  trachyte,"  from  near  Sunset,  Boulder  County,  Colorado. 
Colo.  Sci.  Soc,  Proa,  vol.  7,  pp.  216-230  [1902]. 
Describes  the  occurrence,  the  megascopic  and  microscopic  characters,  and  the  composition, 
Breeze  (Fred  J.). 
1.  The  valley  of  the  lower  Tippecanoe  River  [Indiana]. 
Ind.  Acad.  Sci.,  Proc.  for  1901,  pp.  215-216,  1  fig.,  1902. 
