302  INDEX    TO    PUBLICATIONS    OF    U.    S.    GEOL.    SURVEY,      [bill.  177. 
Dudley ite,  chemical  constitution  of Bull  125,  p  51 
I  hiluth  group  of  Minnesota Mon  v,  pp  275-279 
Dumortierite,  analyses  of,  from  Arizona,  Yuma  County.  .Bull  60,  p  134;  Bull  64,  p  134 
chemical  composition  of Bull  125,  pp  20,  63,  102 
from  New  Yorl>  and  Arizona Bull  60,  pp  133-135;  Bull  64,  pp  31-33 
occurrence  and  statistics  of MR  1888,  p.  582;   MR  1889-90, 
p  448;  MR  1891,  p  540;  MR  1892,  p  781;  MR  1893, 
pp  682,  697-698;  Ann  16,  iv,  pp  604,  605;  Ann  17,  in 
cont,  p  924;  Ann  18,  v  cont,  p  1217;  Ann  19,  vi  cont, 
p  513;  Ann  20,  vi  cont,  p  599;  Ann  21,  vi  cont,  p  461 
Dune  sand,  description  of,  as  one  of  the  educational  series Bull  150,  pp  61-63 
in  Colorado,  eastern Ann  1 7,  n,  pp  579-580 
Dunes,  formation  of Ann  5,  pp  99-100 
in  area  of  glacial  Lake  Agassiz Mon  xxv,  p  28 
in  Bonneville  Basin,  composed  of  gypsum Mon  i,  p  223 
in  Great  Basin Mon  xi,  pp  153-156 
in  Massachusetts,  Cape  Ann  district Ann  9,  pp  574-575 
western-central Mon  xxix,  p  748 
in  Nebraska Ann  19,  i  v,  pp  733,  741 
stratification,  etc. ,  of Mon  xxxiv,  pp  11-13 
Dunes  and  drifting  sand Mon  i,  pp  59-60 
Dundee  limestone  (upper  Helderberg)  of  Michigan WS  30,  pp  87-88 
Dungeness  River,  Washington,  flow  of,  measurements  of Ann  20, 
iv,  pp  63,  518-519;  Ann  21,  iv,  pp  438-439;  WS 
16,  p  182;  WS  28,  pp  174, 176;  WS  38,  pp  383-384 
Dunite,  analysis  of,  from  North  Carolina,  Corundum  Hill Bull  42, 
pp  55,  56;  Bull  148,  p  91 ;  Bull  168,  p  54 
Dunite-gneiss  contacts  of  Corundum  Hill,  North  Carolina,  in  relation  to  origin 
of  corundum Bull  42,  pp  45-63 
Duplin  beds  of  North  Carolina,  correlation  of Ann  18,  n,  p  338 
Durbachite,  analysis  of,  from  Germany,  Schwarzwald Ann  20,  in,  p  531 
Duryee  (E. ) ,  cement,  tests,  costs,  etc. ,  of WS  33,  pp  82-90 
Dust,  chamber,  analyses  of,  from  Colorado,  Leadville  district Mon  xn, 
pp  712-713,  715-716 
Dust,  volcanic.     See  Volcanic  dust. 
Dutton  (C.  E.) ,  Charleston  earthquake Ann  9,  pp  203-528 
Hawaiian  volcanoes Ann  4,  pp  75-219 
Mount  Taylor  and  Zuni  Plateau Ann  6,  pp  105-198 
physical  geology  of  Grand  Canyon  district Ann  2,  pp  47-166 
quoted  on  contractional  theory  of  folding Ann  13,  n,  pp  277-278 
report  on    hvdrographic   and  engineering  branches  of  irrigation  survey 
during  1888-89 Ann  10,  pp  2,  65-77 
Tertiary  history  of  Grand  Canyon  district Mon  n 
work  in  charge  of,  1879-1888 Ann  1,  pp  28-31; 
Ann  2,  pp  5-10;  Ann  4,  pp  22-23;  Ann  5,  pp  42-43,  Ann  6,  pp 
59-62;  Ann  7,  pp  97-103;  Ann  8,  i,  pp  156-165;  Ann  9,  pp  96-98 
Duty  of  water  in  irrigation Ann  13,  in,  pp  155-158 
in  southern  California  and  elsewhere Ann  19,  iv,  pp  543-548 
Dyad  metals,  chemical  constitution  of  orthosilicates  of Bull  125,  pp  68-74 
Dynamic  action,  new  rock  structures  produced  by Bull  62,  pp  206-208 
Dynamic  geology  of  Black  Hills Ann  19,  n,  pp  592-593 
of  Montana,  Judith  Mountains Ann  1 8,  1 1 1,  pp  576-587 
Little  Belt  Mountains Ann  20,  m,  pp  385-400 
(See  Degradation;  Deposition;  Diastrophism;  Metamorphism;  Volcanism.) 
Dynamic  metamorphism  in  eruptive  rocks Bull  62 
