646  INDEX    TO    PUBLICATIONS    OF    U.    S.    GEOL.    SURVEY,     [bcix.177. 
Quartz-porphyry,  analysis  of,  from  Wisconsin,  Upper  Quinnesec  Falls  (schis- 
tose)   Bull  148,  p  102;  Bull  168,  p  72 
of  California,  Bidwell  Bar  quadrangle GF  43,  p  4 
of  California,  Downieville  quadrangle GF  37,  p  4 
Grass  Valley  district GF  29,  p  2 
of  Catoctin  belt Ann  14,  n,  pp  302-304 
of  Colorado,  Aspen  district Mon  xxxi,  pp  48-53 
Mosquito  Range Mon  xn,  pp  76-81,  323-332 
of  Keweenaw  series Mon  v,  pp  95-112 
of  Maryland,  Harpers  Ferry  quadrangle GF  10,  p  2 
of  Michigan,  Marquette  region Bull  62,  pp  148-151 
of  Montana,  Butte  district GF  38,  p  2 
Little  Belt  Mountains . Ann  20,  in,  pp  520-524 
microscopical  petrography  of Bull  139,  pp  97-103 
of  Nevada,  Eureka  district Ann  3,  pp  273-274;  Mon  xx,  pp  220-221,  345 
Washoe  district Ann  2,  p  299;  Mon  in,  pp  45-48,  108-112,  150,  196 
of  Sierra  Nevada Ann  14,  n,  pp  483-484;  Ann  17,  i,  pp  573-646,  649,  669 
of  Utah,  Tintic  district Ann  1  9,  m,  pp  635-638,  757-759 
of  Virginia,  Harpers  Ferry  quadrangle GF  10,  p  2 
of  West  Virginia,  Harpers  Ferry  quadrangle GF  10,  p  2 
thin  section  of Ann  16,  i,  p  595 
from  Lake  Superior  district Ann  3,  pp  112-113 
from  Michigan,  Keweenaw  Point Mon  v,  pp  94-95 
near  Marquette Bull  62,  pp  236-237 
from  Minnesota,  Great  Palisades Mon  v,  pp  94-95,  100-101 
from  Nevada,  WTashoe  district Mon  in,  pp  150-151 
from  Ontario,  Bead  Island Mon  v,  pp  100-101 
Michipicoten  Island Mon  v,  pp  101-102 
from  Pennsylvania,  South  Mountain Bull  136,  pp  100-101 
from  Sierra  Nevada Ann  17,  i,  pp  750-751 
(See,  also,  Rhyolite-porphyry. ) 
Quartz-porphyry-schist,   analysis  of,    from  California,    Downieville  quadran- 
gle   Ann  17,  i,  p  721 
Quartz-pyroxene-diorite,  analysis  of , 'from  California,  Sonora  quadrangle Ann  17, 
i,  p  724;  Bull  148,  p  218;  Bull  168,  p  204 
of  Sierra  Nevada Ann  17,  i,  p  663 
Quartz-pyroxene-mica-diorite,  analysis  of,  from  Yellowstone  Park,  Electric 
Peak Bull  148,  p  117;  Bull  168,  p  87 
Quartz-schist,  analysis  of,  from  Maryland,  Green  Spring  Valley Bull  148,  p  90; 
Bull  168,  p  50 
from  Maryland,  Green  Spring  Valley,  description  of,  as  one  of  the  educa- 
tional series Bull  150,  pp  302-305 
Quartz-slate  member  of  the  Penokee  series Ann  10, 
i,  pp  349,  370-379;  Mon  xix,  pp  146-171 
Quartz-syenite,  analysis  of,  from  Montana,  Bearpaw  Mountains Bull  148, 
p  156;  Bull  168,  p  135 
analysis  of,  from  Yellowstone  Park,  Absaroka  Range Bull  168,  p  95 
Quartz-syenite  group  of  rocks  from  Alaska Ann  20,  vn,  pp  200-201 
Quartz-syenite-porphyry,  analysis  of,  from  Montana,  Bearpaw  Mountains.. Bull  148, 
p  156;  Bull  168,  p  135 
analysis  of,  from  Montana,  Little  Belt  Mountains.  .Bull  148,  p  148;  Bull  168,  p  127 
Quartz-tourmaline-porphyry,  analysis  of,  from  Montana,  Castle  Mountain  dis- 
trict, Fourmile  Creek Bull  1 39, 
pp  101, 135, 136;  Bull  148,  p  150;  Bull  168,  p  129 
