NEW    BKUNSWICK,    NOVA    SCOTIA,    NEWFOUNDLAND,    ETC.      493 
rites,  and  argillites.  In  Grand  Manan  are  various  crystalline  rocks 
which  are  not  definitely  referred  to  any  period,  but  are  compared  to  the 
Huronian.  The  Devonian  and  Huronian  rocks  are  folded  together, 
but  no  evidence  is  seen  of  unconformity  between  the  two  series.  The 
Mascarene  series  in  general  aspect  resembles  the  Huronian  series  of 
St.  John  and  King  counties.  Intrusive  granites  are  found  at  many 
points.  In  general  the  contacts  of  these  granites  with  the  surround- 
ing rocks  are  not  found,  and  their  age  is  thus  unknown. 
The  diorites  and  schists  of  Bloomsbury  Mountain,  formerly  sup- 
posed on  stratigraphical  grounds  to  be  more  recent  than  the  Huro- 
nian, resting  upon  the  St.  John  group  and  overlain  conformably  by 
the  Devonian  sandstones,  are  now  regarded  as  Huronian  on  litholog- 
ieal  grounds,  being  probably  brought  up  by  a  fault.  At  Musquash 
Harbor  and  at  RatclihVs  mill  stream  green  subcrystalline  schists  rest 
conformably  upon  the  Primordial  strata,  but  the  latter  are  believed  to 
be  overturns  and  the  former  Huronian. 
The  rocks  of  the  Coastal  group  at  several  points  overlie  Upper 
Silurian  or  Devonian  strata.  They  were  formerly  described  as  Devo- 
nian; but  as  Hunt  finds  them  similar  to  the  Huronian  in  lithological 
character,  the}7  are  so  referred,  and  the  apparent  inferior  position  of 
the  Devonian  is  supposed  to  be  due  to  a  dislocation.  Accidental  inter- 
calations of  Upper  Silurian  and  Kingston  strata  are  found. 
Bailey,12  in  1872,  describes  the  rocks  of  the  greater  part  of  Grand 
Manan  as  consisting  of  Triassic  trap.  Upon  its  east  side  are,  how- 
ever, found  metamorphic  rocks,  which  may  belong  to  different  series ; 
but  none  are  believed  to  be  more  recent  than  the  earliest  Primordial 
Silurian,  while  some  of  them  may  be  Huronian. 
Matthew  and  Bailey,13  in  1876,  place  the  Mascarene  and  Kingston 
series,  the  latter  of  which  was  previously  considered  Upper  Huronian, 
in  the  Upper  Silurian  on  account  of  fossils  discovered  in  them. 
Bailey  and  Matthew,14  assisted  by  Ells,  in  1877,  in  observations 
on  southern  New  Brunswick,  provisionally  refer  the  Coldbrook  group. 
formerly  considered  as  Laurentian,  to  the  Huronian.  The  granites 
are  separated  from  the  stratified  formations  of  the  Coldbrook  group. 
Matthew,15  in  1878,  refers  as  doubtfully  belonging  to  the  Lauren- 
tian the  slate  formation  of  Charlotte  County,  formerly  described  as 
Coastal  rocks  and  placed  in  the  Huronian.  In  the  Kingston  -cries, 
more  recent  than  the  Coastal,  are  rather  crystalline  rocks  which  are 
believed  in  part  to  belong  to  the  Upper  Silurian,  but.  like  the  ( !oastal 
rocks,  are  of  uncertain  age.  The  crystalline  mica  schists,  hornblende 
schists,  gneisses,  diorites.  etc.  of  Grand  Manan  combine  in  characters 
the  two  belts  of  Kingston  rocks  and  those  of  certain  Upper  Silurian 
strata. 
Bailey  and  Ells.10  in  1878,  find  in  the  Caledonia  Mountains  of 
Albert  and  Westmoreland  counties  chloritic  and  talcose  slates  asso 
