Yol.  49.] 
SHEET  OE  DLABASE  AT  KOBEST  HOOD. 
•535 
The  beds  of  Skiddaw  Slate  are  more  or  less  hardened  where  they 
are  in  contact  with  the  intrusive  sheet  of  diabase,  but  beyond  that 
there  is  not  much  evidence  of  metamorphism,  either  in  the  diabase 
itself  or  the  adjacent  rocks,  the  grit  from  which  the  slides  were 
taken  being  apparently  too  far  away  to  be  affected  by  the  heat  from 
so  small  a  body  of  molten  magma. 
There  is  no  section  exposed  where  the  diabase  can  be  seen  break¬ 
ing  through  or  across  the  adjoining  beds,  although  it  is  possible 
that,  in  some  of  the  places  where  it  appears  to  be  shifted  by  faults, 
the  appearances  may  in  reality  be  due  to  the  diabase  breaking 
through  the  strata,  and  not  to  the  effect  of  faults.  Further  in¬ 
vestigation  may  perhaps  throw  more  light  upon  this  point. 
My  best  thanks  are  due  to  Prof.  Bonney  and  Messrs.  Hellon, 
Brockbank,  and  Travers,  for  the  valuable  help  I  have  received  from 
them  in  the  preparation  of  this  paper. 
