422  Geological  Society  : — 
A  brief  outline-description  of  the  main  subdivisions  is  first  given, 
as  they  appear  when  followed  from  Ludlow  southward  to  Overton, 
eastward  to  Caynham  Camp,  westward  to  Downton-on-the-Rock, 
and  northward  to  Bromfield,  and  also  near  Onibury  and  Norton.  The 
main  tectonic  features  of  the  district  appear  to  be  due  to  the 
superposition  of  Armorican  movements  in  rocks  with  a  Caledonian 
trend,  held  by  some  rigid  mass  to  the  north,  presumably  the 
Longmynd  massif.  A  detailed  description  is  then  given  of  the 
succession,  as  seen  at  the  following  localities  : — River  Teme,  Wigmore 
Road,  Deerhouse  Bank,  Caynham  inlier,  the  Teme  and  north-east 
of  the  Castle  at  Downton,  Downton-Castle  inlier,  Mocktree,  and 
near  Onibury  on  the  Craven-Arms  Road,  the  Onibury-Norton  Lane, 
and  at  Norton.  The  paper  closes  with  a  detailed  list  of  fossils 
obtained  by  the  authoresses,  supplemented  by  the  collection  in  the 
Ludlow  Museum. 
2.  '  The  Carboniferous  Rocks  at  Rush  (County  Dublin).'  By 
Charles  Alfred  Matley,  D.Sc.,  E.G.S.  With  an  Account  of  the 
Faunal  Succession  and  Correlation.  By  Arthur  Vaughan,  B.A., 
D.Sc,  F.G.S. 
Rocks  of  the  Carboniferous  Limestone  Series  are  exposed  along 
5  miles  of  coast  near  Rush,  Loughshinny,  and  Skerries,  in  County 
Dublin.  The  present  paper  deals  only  with  the  beds  near  Rush,  in 
the  southern  portion  of  this  tract,  where  about  2500  feet  of  the 
series  are  exposed,  without  allowing  for  gaps  in  the  succession.  The 
upward  sequence  is  (on  the  whole)  from  south  to  north,  and  the 
range  is  from  the  Upper  Zaphrentis-  to  the  Upper  Dibunopliyllum- 
Zone. 
The  Rush  Slates  are  the  lowest  beds,  1380  feet  thick,  but 
their  base  is  not  visible.  They  consist  of  black  and  dark-grey,  well- 
cleaved  argillaceous,  and  less  perfectl)*- cleaved  calcareous,  slates ; 
and  they  contain  bands  and  nodules  of  limestone.  The  peculiar 
outcrop  of  some  of  the  limestone-bands  is  described,  and  instances 
of  cataclastic  structure  are  noticed.  The  characteristic  fossil  is 
Zaplirentls  aff.  Phillipsii. 
The  Rush  Conglomerate-Group  succeeds  the  Rush  Slates, 
after  a  short  interval  of  passage-beds.  It  is  500  feet  thick,  and 
consists  of  well-bedded  alternations  of  conglomeratic,  pebbly,  and 
sandy  limestones,  with  shales  and  calcareous  flaggy  beds.  Ordo- 
vician  and  Silurian  rock-fragments  abound  in  them,  together  with 
many  inclusions  of  Carboniferous  Limestone.  The  group  is  shown  to 
be  of  the  same  age  as  the  Pendine  Syringothyris-conglomeY&te  and 
the  volcanic  rocks  of  Weston-super-Mare,  and  its  existence  indicates 
that  the  movement  and  disturbance  in  Mid-Avonian  times  extended 
over  a  considerable  area. 
The  beds  above  the  conglomerates  are  mainly  limestones 
and  calcareous  shales.    They  are  thrown  into  numerous  sharp  folds, 
