The  Kev.  Henry  W.  Crosskey  exhibited  a  small  block  of  limestone,
bored  by  Pholasy  from  Great  Orme's  Head,  which  he  had  lately
visited  in  company  with  Mr.  R.  D.  Darbishire,  of  Manchester.  He
described  the  position  and  peculiarities  of  the  supposed  PholcLS
borings.  The  specimen  exhibited  was  from  a  height  of  570  feet.  The
preservation  of  the  Pholaa  burrows  in  the  position  in  which  they  are
now  found,  proves  that  the  elevation  of  the  land  must  have  taken
place  since  the  Glacial  epoch.
