FOR    THE    YEARS    1901-1905,    INCLUSIVE.  321 
Steiger  (George) — Continued. 
2.  The  action  of  silver  nitrate  and  thallous  nitrate  upon  certain  natural  silicates. 
U.  S.  Geol.  Surv.,  Bull.  no.  262,  pp.  75-90,  1905. 
Steiger  (George),  Clarke  (Frank  Wiggles  worth)  and. 
1.  The  action  of  ammonium  chloride  upon  silicates. 
See  Clarke  (F.W.)  and  Steiger  (George),  1. 
2.  On  " calif ornite." 
See  Clarke  (F  \V.)  and  Steiger  (George  ..  2. 
Steiger  (George),  Diller  (J.  S.)  and. 
1.   Volcanic  dust  and  sand  from  St.  Vincent  caught  at  sea  and  the  Barbados. 
See  Diller  (.1.  S.)  and  Steiger  (George),  1. 
Sternberg  (Charles  H.). 
1.  Experiences  with  early  man  in  America. 
Kans.  Acad.  Sci.,  Trans.,  vol.  18,  pp. 89-93,  1903. 
Describes  association  of  human  relics  with  fossil  bones  of  animals  and  discusses  evidence  as 
to  their  age. 
2.  The  Permian  life  of  Texas. 
Kans.  Acad.  Sci.,  Trans.,  vol.  18,  pp.  94-98,  1903. 
Describes  the  occurrence  of  fossil  remains  and  physical  characters  of  the  Permian  Red  Beds 
in  Baylor  County.  Texas. 
3.  Elephas  columhi  and  other  mammals  in  the  swamps  of  Whitman  County,  Wash- 
ington. 
Science,  new  ser..  vol.  IV,  pp. 511-512,  1903. 
Describes  the  occurrence  of  mammalian  remain-. 
4.  Notes  on  the  Judith  River  group. 
Science,  new  ser.,  vol.  17,  pp. 870-872,  1903. 
Discusses  the  occurrence  of  vertebrate  fossils  and  the  stratigraphic  position  of  The  Judith 
River  beds. 
5.  Protostega  gigas  and  other  Cretaceous  reptiles  and   li>hcs  from  the  Kansas  Chalk. 
Kans.  Acad.  Sci.,  Trans.,  vol.  19.  pp.  123-128,  2  pis..  1905. 
Gives  notes  on  the  character  and  occurrence  of  these  fossils. 
Sterrett  (Douglass  B.) . 
1.  Tourmaline  from  San  Diego  County,  California. 
Am.  Jour.  Sci.,  4th  ser..  vol    17.  pp.  159-465,  1  pi..  12  figs.,  1904. 
Describes  crystallographic  features  of  this  mineral. 
2.  A  new  type  of  calcite  from  the  Joplin  mining  district. 
Am.  Jour.  Sci.,  4th  ser.,  vol.  18.  pp.  73-76,  8  figs..  1904. 
Describes  the  occurrence  and  crystallographic  characters. 
Sterrett  (Douglass  B. ),  Pratt  (Joseph  Hyde)  and. 
1.  The  tin  deposits  of  the  Carolinas. 
See  Pratt  (J.  H.)  and  Sterrett  (D.  B.  i,  1. 
Stevens  (Blarney). 
1 .  Geology  of  some  copper  deposits  in  Alaska. 
Eng.  &  Mg.  Jour.,  vol.  7."..  p. 782,  2  figs..  1903. 
2.  Relation  of  rock  segregation  to  ore  deposition. 
Eng.  &  Mg.  Jour.,  vol.  76.  p.  574,  1903. 
3.  On  the  differentiation  of  igneous  magmas  and  formation  of  ores. 
Eng.  &  Mg.  Jour.,  vol.  77.  pp.  71-72.  1904. 
4.  Acidic  magmas,  their  exhalations  and  residue-. 
Eng.  &  Mg.  Jour.,  vol.  77,  p.  351.  1904. 
Stevens  (E.  A.). 
1.  An  occurrence  of  limburgite  in  the  Cripple  Creek  district  [Colorado]. 
Am.  Inst.  Mg.  Engrs.,  Trans.,  vol.  30.  pp.  759-764.  4. figs..  1901. 
Describes  the  occurrence  and  character  of  this  rock  type. 
Bull.  301—06 21 
