OF  THE  GLOBES.
385
declines  towards  the  west;  that  is,  to  the  left
hand  from  the  twelve  o’clock  line  in  the  former
case,  and  to  the  right  hand  from  it  in  the  latter.
To  find  the  distance  of  this  line  from  that  of
twelve.
This  may  be  considered,  1.  If  the  dial  declines
from  the  south  towards  the  east,  then  count  the
degrees  of  that  declination  in  the  horizon,  from
the  east  point  towards  the  north,  and  bring  the
lower  end  of  the  quadrant  to  that  degree  of  declination ¬
  where  the  reckoning  ends;  then  turn  the
globe,  until  the  first  meridian  cuts  the  horizon
in  the  like  number  of  degrees,  counted  from  the
south  point  towards  the  east,  and  the  quadrant
and  first  meridian  will  cross  one  another  at  right
angles,  and  the  number  of  degrees  of  the  quadrant,
which  are  intercepted  between  the  first  meridian
and  the  zenith,  is  equal  to  the  distance  of  this  line
from  the  twelve  o’clock  line.
The  numbers  of  the  first  meridian,  which  are
intercepted  between  the  quadrant  and  the  north
pole,  is  equal  to  the  elevation  of  the  style  above
the  plane  of  the  dial.
Bb
The