FOR    THE    YEARS    1901-1905,   INCLUSIVE.  167 
Hille  (F.). 
1.  The  iron  ore  deposits  of  western  Ontario  and  their  genesis. 
Can.  Mg.  Inst.  Jour.,  vol.  5,  pp.  49-61,  G  pis.,  1902. 
Describes  the  geologic  and  geographic  position  of  the  ore  deposits,  and  discusses  their  for- 
mation. 
2.  The  Baraboo  iron  ore. 
Eng.  &  Mg.  Jour.,  vol.  77,  p.  875,  1904. 
Discusses  the  geologic  age  and  origin  of  the  iron  ores  of  Baraboo,  Wisconsin. 
3.  Genesis  of  the  Animikie  iron  range  [Ontario]. 
Can.  Mg.  Inst,  Jour.,  vol.  6,  pp.  245-287,  1904. 
Discusses  the  geologic  data  bearing  upon  the  presence  and  amount  of  iron  ore  north  of  the 
International  Boundary  in  this  region,  the  character,  occurrence,  classification,  and  nomen- 
clature of  Archean  and  Algonkian  formations,  the  origin,  constituents,  and  metamorphism 
of  their  rocks,  and  the  origin  of  the  iron  ores. 
4.  A  correction  in  the  classification  of  our  gold  formation. 
Can.  Mg.  Inst.,  Jour.,  vol.  8,  pp.  183-191,  3  figs.,  1905. 
Discusses  the  relations  of  the  rocks  in  which  the  Algoma  gold  deposits  occur. 
Hillebrand  (W.  F.). 
1.  Chemical  discussion  of  analyses  of  volcanic  ejecta  from  ]V  artinique  and  St.  Vincent. 
Nat.  Geog.  Mag.,  vol.  13,  pp.  29G-299,  1902. 
2.  The  composition  of  yttrialite,  with  a  criticism  of  the  formula  assigned  to  thalenite. 
Am.  Jour.  Sci.,  4th  ser.,  vol.  13,  pp.  145-152,  1902. 
Discusses  Benedicks'  formula  for  thalenite  and  presents  the  author's  results  of  the  chemical 
properties  of  yttrialite. 
3.  Critical  review  of  the  second  series  of  analyses  of  materials  for  the  Portland 
cement    industry   made    under  the  auspices  of  the  New  York  section  of  the 
Society  of  Chemical  Industr  . 
Am.  Chem.  Soc,  Jour.,  vol.  25,  pp.  1180-120?,  1903. 
4.  Emmonsite  (?)  from  a  new  locality. 
Am.  Jour.  Sci.,  4th  ser.,  vol.  18,  pp.  433-134,  1904. 
Describes  the  occurrence,  optical  and  other  characters,  and  chemical  composition  of  a  mineral 
provisionally  regarded  as  emmonsite,  from  Cripple  Creek,  Colorado. 
5.  Red  beryl  from  Utah. 
Am.  Jour.  Sci.,  4th  ser.,  vol.  19,  pp.  330-331,  1905. 
6.  Two  tellurium  minerals  from  Colorado. 
U.  S.  Geol.  Surv.,  Bull.  no.  202,  pp.  55-57,  1905. 
Describes  occurrence  and  composition  of  emmonsite  (?)  and  tetradymite. 
7.  The  composition  of  yttrialite,  with  a  criticism  of  the  formula  assigned  to  thalenite. 
U.  S.  Geol.  Surv.,  Bull.  no.  262,  pp.  61-68,  1905. 
8.  Preliminary  announcement  concerning  a  new  mercury  mineral  from  Terlingua, 
Texas. 
Science,  new  ser.,  vol.  22,  p.  844,  1905. 
Hillebrand  (W.  F.)  and  Penfield  (S.  L.). 
1.  Some  additions  to  the  al unite- jarosite  group  of  minerals. 
Am.  Jour.  Sci.,  4th  ser.,  vol.  14,  pp.  211-220,  1902.  Zeitschrift  fur  Krystallographie,  vol.  36, 
pp.  545-554,  1902.  [German  translation.]  U.  S.  Geol.  Surv.,  Bull.  no.  262,  pp.  32-41,  2  figs., 
1905. 
Describes  the  occurrence,  optical  and  other  characters,  and  chemical  composition  of  several 
alunite-jarosite  minerals. 
Hillebrand  (W.  F.)  and  Ransome  (F.  L.). 
1.  On  carnotite  and  associated  vanadiferous  minerals  in  western  Colorado. 
U.  S.  Geol.  Surv.,  Bull.  no.  262,  pp.  9-31,  1905. 
Describes  occurrence,  character,  origin,  and  chemical  composition. 
