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ME.  S.  S.  BTTCKMAN  ON  THE  BAJOCIAN 
[Nov.  1893, 
Between  Louse  Hill  and  Sherborne,  a  distance  of  about  2 
miles,  there  is  no  opening  in  the  lower  beds  ;  and  considering  how 
great  is  the  change  at  Sherborne,  this  is  much  to  be  regretted.  To 
follow  the  beds  properly  it  is  necessary  to  go  about  IT  mile  north 
from  Louse  Hill  to  Marston  Load  Quarry,  which  gives  the  following 
section : — 
Section  VII. — Section  on  the  right-hand  side  of  the  road  from  Sher¬ 
borne  to  Marston  (just  beyond  the  second  milestone).  Quarry 
in  a  field  (‘  Marston  Road  Quarry  ’)  and  cutting  on  the  road 
exposing  sands ,  etc. 
The  Quarry. 
Feet.  Inches. 
Bradfordensis.  N.  1.  Soft,  yellowish  limestone  with  many  iron 
grains.  Rhynchonella  ringens,  Dav., 
Lioceras  bradfordense,  Ludwigia  cornu. 
(Top  of  quarry  at  the  southern  end.) . 
Murckisonce.  O.  2.  Soft,  grey  limestone  with  grains  of  iron 
oxide.  Ludwigia  Murckisonce.  Fossils 
scarce . . . 
P.  3.  Hard,  grey,  crystalline  limestone  with  nume¬ 
rous  fossils.  Ludwigia  Murckisonce  (Sow.), 
Tmetoceras  scissum  (Ben.),  Lioceras  opa- 
linum(Re in.),  Erycites  gonionotum  (Ben.), 
Opis  trigonalis  (Sow.),  Cucidlcea  oblonga. 
Sow.,  Pholadomya  fidicula,  Ceromya  bajo- 
ciana,  d’Orb.,  Terebratula  perovalis,  Sow. 
Q.  4.  Bed  of  sand.  (Probably  the  horizon  of  the 
rare  Terebratida  euides ,  S.  Buckm.) 
There  is  perhaps  a  small  hiatus  here,  as 
this  bed  of  sand  could  not  be  detected  in 
The  Boad-cutting. 
5.  Hard,  sandy,  crystalline  limestone  _ , _ 
B.  6.  Yellow  sands. 
There  is  a  very  considerable  increase  in  the  thickness  of  the 
strata  with  Rhynchonella  ringens ,  and  those  below  that  line,  when 
compared  with  the  previous  sections.  There  is  as  much  as  11  feet 
between  the  horizon  of  Rh.  ringens  and  the  strata  marked  R,  which 
stands  for  the  Yeovil  Sands — a  greater  thickness  than  the  whole 
‘Inferior  Oolite  ?  (plus  part  Fullers’  Earth  equivalent?)  shown  at 
Stoford.  This  thickening  is  to  be  accounted  for  by  the  presence  of 
strata  P  and  Q,  which  are  absent  or  very  feebly  developed  in  the 
Bradford  area.  Certainly  P  was  deposited  before  the  hemera  of 
Murchisonce  proper,  while  at  Bradford,  Halfway  House,  and  Louse 
Hill  are  signs  of  erosion  and  cessation  of  deposition  which  may 
have  been  contemporaneous  with  P  of  this  section. 
It  should  be  noted  that  the  strata  of  the  bradfordensis  hemera 
with  the  characteristic  Rh.  ringens  have  now  assumed  respectable 
proportions.  These  proportions  are  maintained  in  the  next  section, 
that  of  Holway  Hill,  about  2J  miles  to  the  north-east. 
2  0 
4  6 
1  6 
5  0 
