Yol.  49.] 
OF  THE  SHERBORNE  DISTRICT. 
509 
Lane,  and  the  necessity  for  distinction  is  the  more  obvious,  more 
particularly  as  the  lithology  differs.  A  more  detailed  investigation 
than  it  is  possible  to  make  in  casual  visits — for  the  beds  most 
wanted  by  the  geologist  are  those  least  worked — will  reveal  how 
much  of  Bed  4  was  deposited  during  the  discitce  hemera,  and  whether 
some  of  it  may  not  have  been  laid  down  during  the  hemera  of 
Witchellia  sp.,  or  inversely.  It  will  fill  in  the  details  to  this  outline, 
but  is  not  likely  to  alter  the  main  facts.  One  of  these — that  the 
‘  Ironshot  ’  of  Dundry  must  not  be  correlated  with  the  4  Ironshot ? 
of  Sherborne,  or  the  4  Oolithe  ferrugineuse  ?  of  Bayeux,  but  is  of 
earlier  date,  Sauzei  hemera,  is  most  important.  This  is  the  key 
to  the  enigma  which  the  correlation  of  the  Dundry  strata  has  always 
presented ;  it  was  the  excavation  at  Sandford  Lane  that  furnished 
this  key. 
There  is  a  closer  agreement  between  Dundry  and  Sandford  Lane 
in  many  respects  than  between  Sandford  Lane  and  neighbouring 
quarries.  From  both,  the  strata  of  the  ffumphriesiani  and  niortensis 
hemerse  are  absent ;  and  even  such  a  small  detail  as  the  remarkably 
level  top  of  the  bed  of  the  Sauzei  hemera  is  common  to  both. 
(c)  Correlation  with  the  Cotteswolds. — The  strata  which  make  up 
what  has  been  usually  known  as  the  4  Inferior  Oolite  Limestone  ’ 
have  been  subdivided  and  distinguished  by  certain  names.  These 
names,  though  they  have  no  more  than  local  significance,  are  yet 
extremely  useful  within  certain  limits.  They  will  indicate  the 
beds  with  sufficient  precision  for  my  present  purpose,  and  I  there¬ 
fore  give  the  following  list  of  the  succession  in  descending  order  : — 
The  Cotteswold  4  Inferior  Oolite/ 
‘  Fullers’  Earth  Clay.’ 
Limestone-beds  above  the  Cly 
grit.1 
Tbe  Clypeus-grit, 
The  Upper  Trigonia- grit. 
The  Hotgrove  Freestone.1 
The  Gryphite-grit. 
Sandy  limestones  (no  name). 
The  Lower  Trigonia- grit. 
The  Harford  Sands.1 
The  Upper  Freestone. 
The  Oolite  Marl. 
The  Lower  Freestone. 
The  Pea-grit. 
The  Lower  Limestone.2 
The  Sandy  Ferruginous  Beds.2 
The  ‘  Cephalopoda-bed.’ 
1  ‘  The  Inferior  Oolite,  etc.,’ Proc.  Cotteswold  Hat.  Field  Club,  vol.  ix.  (1887) 
p.  108. 
2  E.  Witchell,  ‘  Basement  Beds  Inf.  Oolite,’  Quart.  Journ.  Gfeol.  Soc.  vol.  xlii. 
(1886)  pp.  264  et  seqq.,  and  Proc.  Cotteswold  Hat.  Field  Club,  vol.  viii.  (1882) 
pp.  35  et  seqq. 
Characteristic  Fossils. 
Clypeus  Plotii,  Terebratula  globata. 
Bhynchonella  subtetrahedra,  Dav.,  Bh0 
hampenensis,  S.  Buckm. 
Gryphcea  sublobata,  Sonninince. 
Terebratula  Buckmani. 
Aulacothyris  Meriani  (Oppel). 
T.  fimbria ,  the  very  plicate  form. 
T.  fimbria,  the  less  plicate  ;  ‘  T.  curvi- 
frons.’ 
Bhynchonella  oolitica,  Bh.  subangu- 
lata,  Terebratida  plicata. 
Bhynchonella  subdecorata ,  Dav. 
