crider.3  CEMENT    RESOURCES    01    NORTHEAST    MISSISSIPPI.  517 
Feet. 
((/)   Well  at  Bigbee  Valley  post-office,  sec.  1<>,  T.  16,  R.  19  E. : 
Thickness  of  Selma  chalk 200 
Depth  of  well 460 
Water  flows  20  feet  above  surface. 
(e)   Another  well,  sec.  21,  T.  10,  R.  19  E. : 
Sand 200 
Depth  of  well    (flows)  __  444 
(/")  Well  at  Cliftonville : 
Lime    300 
Dark  sand,  dry 20 
White  sand,  water  bearing 20 
Dark  sand,  dry 10 
White  sand,  water  bearing 40 
Ferruginous    sandstone 12 
Depth  of  well 450 
Greensand,  source  of  water. 
(g)   Well  on  A.  G.  Cunningham's  land,  1£  miles  west  of  mouth 
of  James  Creek  : 
Thickness    of    limestone 100 
Depth  of  well   (water  flows) 500 
Well  75  feet  above  Tombigbee  River. 
(//.)   Well  at  Pickinsville,  Ala.,  on  land  of  Will  Rodgers: 
Thickness  of  limestone 100 
Depth  of  well   (water  flows) -loo 
All  the  wells  mentioned  above  except  the  first  one  were  drilled  by 
J.  B.  Cunningham,  Cliftonville,  Miss.,  and  the  records  were  obtained 
from  him.  The  well  drillers  here  fail  to  make  any  distinction  be- 
tween the  lower  Selma  and  the  upper  Eutaw,  so  their  records  can  not 
be  depended  upon  for  obtaining  the  thickness  of  the  Selma. 
A  sample  of  sandy  limestone  was  obtained  from  mouth  of  James 
Creek,  on  Tombigbee  Kiver.  Along  the  Tombigbee,  at  the  mouth  of 
James  Creek,  there  is  an  exposure  of  a  greensand  clay,  containing  a 
large  amount  of  lime.  About  50  feet  above  the  river,  at  a  point  H 
miles  west  of  the  mouth  of  James  Creek,  another  sample  of  limestone 
was  collected.  The  limestone  here  is  similar  in  color  and  general 
aspect  to  that  on  the  Tombigbee,  except  that  it  has  less  greensand. 
Farther  west  the  limestone  rarely  shows  at  the  surface.  Its  clayey 
character  and  its  easy  dissolution  by  weathering  agents  causes  it  to 
break  down  into  a  soil  faster  than  it  is  carried  away  by  erosion. 
At  Cliftonville,  which  is  75  feet  above  Tombigbee  Kiver,  baromet- 
ric reading,  there  is  a  hard  cap  rock  2  to  4  feet  thick,  found  on  top 
of  the  hills  near  the  town.  This  is  a  hard  "lime"  rock  similar  to 
that  found  at  Prairie  Point. 
Below  this  hard  cap  rock  comes  what  is  called  the  "  blue  rock."  A 
sample  of  it  seen  at  a  well  dug  years  ago  shows  it  to  be  similar  to  that 
at  Cunningham  Hill,  except  that  it  has  no  sand  in  it'. 
