PREFACE.
21
FROMa  great  Number  of  Observations ¬
  we  found  the  Elevation  of
the  Pole  at  Tornea  to  be  65  .  50’.
50.  And  we  have  some  reason  to
think  there  are  few  Towns  in  the
most  inhabited  parts  of  Europe,
whose  Latitude  is  more  exactly
known.  We  have  there  oftner  than
once  observed,  at  ſhort  intervals  of
Time,  and  even  in  the  same  Day,
the  two  Altitudes  of  the  Pole-Star,
which  is  there  so  elevated,  that
though  one  knew  not  the  Refractions, ¬
  or  made  no  account  of  them,
they  are  so  inconsiderable  that  the
observed  Altitude  might  afterwards
be  safely  used  in  measuring  the  Horizontal ¬
  Refractions.
ON  the  other  hand,  in  this  Climate ¬
  the  Suns  Meridian  Altitudes
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