502 
ME.  S.  S.  BUCNMAN  ON  THE  BAJOCIAN  [Nov.  1 893, 
there  is  a  road-section  which  is  remarkable  because  of  the  attenua¬ 
tion  of  the  strata  deposited  during  the  Humphriesiani  and  nior¬ 
tensis  hemerae.  The  following  is  the  section : — 
Section  XVI. — Oborne  ;  Quarry  and  Road-cutting  east  of  the  village. 
(Prom  Sherborne  Abbey,  1  mile  7  furlongs  X.E.) 
Feet.  Inches. 
Garantiance.  F.  1.  Yellow,  sandy  limestone  in  blocks,  about  20  0 
Niortensis.  Gr.  2.  Hard,  grey,  shelly  limestone.  Parkinsonia 
niortensis,  Park.  n.  sp.  aff.  Garan- 
tiana,  (Ecotraustes  cadomensis,  Tere- 
bratula  sphceroidalis ,  abundant  .  1  o 
Eurnphriesiani.  H.  3.  Brown,  iron  shot  limestone.  In  the  bot¬ 
tom  part  of  this  bed  Lima  proboscidea 
was  found  in  a  lump  of  green-grained 
matrix,  apparently  redeposited .  3 
4.  Hard  brown  ironshot  limestone  en¬ 
closing  green-grained  lumps  of  marl, 
Sonninia  sp .  3 
Sauzei.  J.  5.  White  marl  with  green  grains,  partly 
cemented  to  the  bed  below  by  a 
shelly  matrix.  ‘  Witchellia  Iceviuscula 
Witch,  sp.,  Sphceroceras  Brocchi.  Two 
species  of  Stephaiwceras ,  one  ‘  crassi- 
costate,’  the  other  ‘  planulate,’  Lima 
proboscidea ,  Acanthothyris  paucispina, 
Buckrn.  &  Walker,  Pleurotomaria  gra- 
nulata  (Sow.),  Arnberleya  obornensis, 
Hudl.,  Cerithium  sp .  4 
WitchellicB.  3v.  6.  Hard,  bluish  limestone,  in  several  layers 
with  earthy  partings.  At  the  top  a 
large  Witchellia,  16  in.  (40  cm.)  across, 
in  very  poor  condition  .  3  0 
Bed  5  may  obviously  be  correlated  with  the  marl-bed  of  Progden. 
Above  this  some  erosion  and  re-deposition  evidently  took  place  ;  and 
certainly  an  extremely  small  amount  of  sediment  was  deposited 
during  the  LLumph ri esia ni  hemera.  Bather  more  was  deposited 
during  that  of  niortense ;  but  its  lithological  condition  .is  quite 
different  from  that  of  Progden.  Altogether  only  1  foot  9  inches  of 
strata  at  the  most  intervenes  between  the f  Building-stone  5  equivalent 
and  the  green  marl,  while  at  Progden,  half  a  mile  distant,  there 
is  more  than  5  feet. 
About  1  mile  and  3  furlongs  northward  is  the  last  section  to  be 
described. 
Section  XVII. — In  a  road-cutting  at  Hilborne  TT  id ,  Somerset. 
(On  the  road  to  Pointington,  about  3  miles  X.E.  of 
Sherborne  Abbey.) 
Garantiance.  F  ? 
Humphriesiani.  H. 
1.  Light  yellow,  sandy  limestone  ...about 
2.  Soft,  white,  chalky  limestone  (forms  a 
paste  when  wet).  *  Stephanoceras 
BraikenridgiV,  Poecilomorplius  cycloides, 
Sphceroceras  Wrighti,  Opjpelia  aff.  sub- 
radiata.Borsetensia  liostraca, S.Buckm., 
Feet. 
8 
Inches. 
0 
