Vol.  49.] 
OF  THE  SHEPJBORHE  DISTRICT. 
497 
All  these  sections  show  the  same  features — namely,  upper  beds  of 
rubblv  stone  which  is  burnt  for  lime,  lower  beds  of  freestone,  which 
forms  the  chief  building-stone  of  Sherborne.  As  will  be  seen  presently, 
the  freestone  rests  on  the  strata  of  the  niortensis  hemera,  which  is 
also  partly  represented  by  the  4  Astarte- bed  ’  of  Louse  Hall.  On  the 
other  hand,  only  the  upper  part  of  the  rubble-beds  can  be  exactly 
contemporaneous  with  the  ‘Fossil  Bed’  of  Halfway  House,  for 
most  of  the  Ammonites  are  of  an  earlier  biological  type,  though  of 
the  same  genus.  Therefore  round  Sherborne  as  much  as  45  feet  of 
strata  was  deposited  during  the  same  time  that  only  1J  feet  was  laid 
down  at  Halfway  House,  a  locality  only  about  2  miles  distant. 
In  the  next  section  the  ‘  Bubbly  Beds  ’  and  the  4  Building-stone  ’ 
are  seen  resting  on  beds  which  were  not  represented  at  Sandford 
Lane — namely,  strata  of  the  niortensis  hemera.  The  following  is  the 
section,  which  is  only  a  few  yards  from  the  one  last  given,  but 
reaches  a  lower  horizon. 
Section  XIII. 
Truellii  ? 
D? 
& 
& 
Garantiance. 
E. 
F. 
Niortensis.  Gr. 
■Lower  Clatcombe ,  by  the  new  Farmhouse. — (From 
Sherborne  Abbey,  1  mile  X.) 
Feet.  Inches. 
1.  Bubbly  shelly  limestone  "with  irregular 
partings.  Parkinsonia  aff.  precursor, 
P.  rarecostata,  P.  Parkinsoni,  and  a 
form  between  these  two  found  at  the 
top  of  the  quarry  .  10  0 
2.  Yellowish  and  blue  sandy  limestone  in 
large  blocks  with  several  partings, 
.  about  14  0 
3.  Several  beds  of  grey,  sandy  limestone 
and  partings  .  6  0 
4.  Grrey,  sandy  limestone  .  1  .6 
5.  Blue  sandy  parting  .  3 
6.  Blue  and  brown  sandy  limestone. 
Terehratula  sphcsroidalis  and  Acan- 
thothyris  sp .  6 
7.  Blue-centred  (brown  outside)  ironshot 
limestone  of  very  open  texture. 
Parkinsonia  Caumontii  (d’Orb.),  and 
allied  forms.  ‘  StephanocerasBraiken- 
ridgii ,’  St.  Banksi  (Sow.),  very  large, 
St.  Blagdeni  (Sow.),  Parkinsonia 
niortensis,  and  another  species.  ‘  Peri- 
sphinctes  ’  Davidsoni ,  S.  Buckm.  A 
small  Sphceroceras,  Oppelia  sp.,  Tere- 
bratula  Cranece,  Dav.,  T.  gravida , 
var.  T.  Phillipsi  (Morris),  Glosso- 
thyris  curviconcha  (Oppel),  Plesio- 
thyris  reversa,  S.  Buckm.,  Bhyncho- 
nella  plicatella  (Sow.),  Trochus  du- 
plicoMis ,  Pseudornelania  lineata,  Na- 
tica  bajocensis,  Pleurotomaria  between 
Palemon  and  granulata  . .  1  0 
8.  Blue-centred  ironshot  limestone  with 
dwarf  £  Stephanoceras  Broikenridgii  ’ 
and  Oppelia  (umbilicate  sp.)  .  5 
9.  Earthy  parting.  Oppelia  aff.  subradiata 
2  L  2 
