FOR   THE   YEABS   1901-1905,  INCLUSIVE* 
Arnold  (Ralph) — Continued. 
6.  Some  crystalline  rocks  of  the  San  Gabriel  Mountains,  near  Pasadena,  California. 
Abstract:  Science,  new  ser.,  vol.  21,  p.  350,  1905. 
Arnold  (Ralph)  and  Strong  (A.  M.). 
1.  Some  crystalline  rocks  of  the  San  Gabriel  Mountains,  California. 
Geol.  Soc.  Am.,  Bull.,  vol.  16,  pp.  183-204,  2  figs.,  1905. 
Describes  the  location,  typography,  and  age  of  the  San  Gabriel  Mountains,  the  general  char- 
acter of  the  rocks,  and  in  detail  the  occurrence,  megascopic  characl  jrs,  and  constitution  of 
plutonic  and  metamorphic  rocks. 
Arnold  (Ralph),  Haehl  (H.  L.)  and. 
1.  The  Miocene  diabase  of  the  Santa  Cruz  Mountains  in  San  Mateo  County,  Cali- 
fornia. 
See  Haehl  (H.  L.)  and  Arnold  (Ralph),  1. 
Arreola  (Jose  Maria). 
1.  The  recent  eruptions  of  Colima  [Mexico]. 
Jour.  Geol.,  vol.  11,  pp.  749-761,  8  figs.,  1903. 
Gives  a  chronologic  record  of  the  activity  of  the  volcano  Colima  and  discusses  volcanic 
phenomena. 
Ashley  (George  Hall). 
1.  The  eastern  interior  coal  field. 
U.  S.  Geol.  Surv.,  22d  Ann.  Rept.,  pt.  3,  pp.  265-305,  4  pis.,  1  fig.,  1902. 
Describes  extent,  general  geologic  relations,  stratigraphy  and  structure  of  the  coal  field  occu- 
pying parts  of  Illinois,  Indiana,  and  Kentucky,  and  the  character  and  occurrence  of  the 
coal  and  coal  seams. 
2.  The  geology  of  the  Lower  Carboniferous  area  of  southern  Indiana. 
Ind.,  Dept.  Geol.  &  Nat.  Res.,  27th  Ann.  Rept.,  pp.  49-122,  13  pis.,  3  figs.,  1903. 
Describes  physiographic  and  drainage  features,  the  stratigraphy,  character,  occurrence,  and 
geologic  relations  of  Lower  Carboniferous  formations  and  economic  resources  of  this  area. 
3.  The  Cumberland  Gap  coal  field  of  Kentucky  and  Tennessee. 
U.  S.  Geol.  Surv.,  Bull.  no.  225,  pp.  259-275,  1904. 
Describes  location,  stratigraphy,  and  geologic  structure  of  the  field,  the  character  and  geo- 
logic relations  of  the  coal  seams,  and  the  mining  developments. 
4.  The  Cumberland  Gap  coal  field. 
Mg.  Mag.,  vol.  10,  pp.  94-100,  1  pi.,  5  figs.,  1904. 
Describes  the  location  and  general  geologic  structnre  of  the  coal  basin  occupying  parts  of 
Kentucky  and  Tennessee,  and  the  occurrence,  character,  and  mining  of  the  coals. 
5.  [Geologic  structure  of  the  region  around  Middlesboro,  Ky.] 
Abstract:  Science,  new  ser.,  vol.  19.  p.  856,  1904. 
6.  Water  resources  of  the  Middlesboro-Harlan  region  of  southeastern  Kentucky. 
U.  S.  Geol.  Surv.,  Water-Supply  and  Irrigation  Paper  no.  110,  pp.  177-178,  1905. 
7.  Coal  in  the  Nicholas  quadrangle,  West  Virginia. 
U.  S.  Geol.  Surv.,  Bull.  no.  260,  pp.  422-428,  1905. 
Describes  the  general  geology,  and  the  character  and  occurrence  of  the  coals. 
8.  Water  resources  of  the  Nicholas  quadrangle,  West  Virginia. 
U.  S.  Geol.  Surv.,  Water-Supply  and  Irrigation  Paper  no.  145,  pp.  64-66,  1905. 
Ashley  (George  Hall),  Blatchley  (W.  S.)  and. 
1.  The  lakes  of  northern  Indiana  and  their  associated  marl  deposits. 
See  Blatchley  (W.  S.)  and  Ashley  (G.  H.),  1. 
Ashley  (George  Hall),  Fuller  (Myron  L. )  and. 
1.  Recent  work  in  the  coal  field  of  Indiana  and  Illinois. 
See  Fuller  (M.  L.)  and  Ashley  (G.  H.),  1. 
Askwith  (W.  R.). 
1.  The  West  Gore  antimony  deposits  [Nova  Scotia]. 
Can.  Mg.  Rev.,  vol.  20,  pp.  173-175,  2  figs.,  1901. 
Describes  the  character  and  occurrence  of  the  ore  body. 
