GREAT   NORTHERN    INTERIOR   OF   CANADA.  527 
Koning,5  in  1824,  describes  the  most  characteristic  rock  collected 
by  Captain  Parry  on  the  west  coast  of  Baffin  Bay  as  gneiss  and 
micaceous  quartz  rock,  with  some  ambiguous  granitic  compound  in 
which  hornblende  seems  to  enter  as  a  subordinate  ingredient. 
Lyon,6  in  18259  describes  Cape  Fullerton,  on  the  main  shore  west 
of  Southampton  Island,  to  be  composed  of  rugged  red  and  gray 
granitic  rocks  with  the  strata  running  in  a  northwest  direction. 
Jameson,7  in  182G,  states  that  the  material  collected  by  Captain 
Parry  shows  that  the  west  coast  of  Davis  Strait  and  Baffin  Bay, 
south  of  Lancaster  Sound,  consists  of  Primitive  rocks,  among  which 
are  gneiss,  mica  slate,  hornblende  slate,  granite  limestone,  horn- 
blende rock,  and  greenstone.  All  these  rocks  are  more  or  less  dis- 
tinctly stratified  and  numberless  transitions  from  one  into  the  other 
were  observed. 
Richardson,8  in  1828,  describes  the  rocks  of  the  Coppermine  River 
series  as  extending  westward  to  the  Height  of  Land  and  consisting 
chiefly  of  sandstone  and  conglomerates  with  granite  and  porphyry. 
The  southeast  extremity  of  McTavish  Bay  consists  of  red  granites 
and  gneisses.  At  the  mouth  of  Dease  River  and  the  northeast  ex- 
tremity of  the  lake  the  prevailing  formation  is  granitic  and  gneissic. 
On  Mount  Fitton,  along  the  Arctic  coast  west  of  Mackenzie  River, 
the  mountain  range  consists  of  graywacke  slates  which  are  considered 
Transition  rocks. 
Leslie,  Jameson,  and  Murray  (Hugh),9  in  1830,  mention  in  the 
region  of  Southampton  Island,  Melville  Peninsula,  and  Hecla-and 
Fury  Strait,  as  prominent  varieties  of  rock,  granite,  gneiss,  mica 
slate,  clay  slate,  chlorite  slate,  Primitive  trap,  serpentine,  limestone, 
and  porphyry.  The  Primitive  range  bordering  the  east  coast  of 
Baffin  Land  is  a  continuation  of  the  Labrador  coast ;  and  on  the  west 
coast  of  Davis  Strait  and  Baffin  Bay,  south  of  Lancaster  Strait, 
Primitive  rocks  preponderate,  including  gneiss,  mica  slate,  and 
granite. 
Ross,10  in  1835,  finds  granitoid  and  gneissic  rocks  to  occupy  ex- 
clusively the  coast  line  and  adjacent  islands  of  the  Boothian  and 
Melville  Peninsula  south  of  70°  35'. 
Fitton,11  in  1836,  describes  the  north  side  of  Great  Slave  Lake 
from  the  entrance  of  the  north  arm  westward  as  consisting  mainly 
of  gneiss,  porphyry,  and  granite.  The  large  islands  and  promontory 
of  the  eastern  part  of  the  lake  are  of  the  trap  formation.  These  arc1 
compared  to  the  Coppermine  series.  Pebbles  of  jasper  conglomerate 
were  collected  near  the  west  end  of  the  lake,  but  the  rock  was  not 
seen  in  place.  The  rocks  on  the  route  from  Great  Slave  Lake  north- 
eastward by  Clinton-Golden  and  Avlmer  lakes  and  (J rent  Fish  River 
to  the  Arctic  coast  are  different  varieties  of  granite  and  gneiss. 
