247											21
                                                                      
                                                                      	and shaft be first determined as opp;  and from the
                                                                      extremities a a with the distance of abacus breadth
                                                                      strike 0 cutting shaft, and join:  then the L a b, is
                                                                      the most nearest admissible approved to the horizontal)
                                                                      In all cases however, while there are seven limits to over
                                                                      horizontality, the line a b may be approached as
                                                                      near to the vertical as to afford substantial support
                                                                      to vertical lines of resistance:  and we have
                                                                      the[s]se four distinct species of capitals, a small
                                                                      excess, low angle b. small excess, high angle;  c large
                                                                      excess, low angle (yet not lower than 45) d large excess
                                                                      high angle, And of these:  a is a capital for colossal
                                                                      size, with pressure on centre of shaft;  b. colossal size,
                                                                      with pressure on extremities of capital;  c small size
                                                                      with pressure on centre, d do with pressure on extremities
                                                                      Depth of Abacus:    This is evidently either arbitrary a dependent on the
                                                                      toughness of composing stone.  I believe it should never be
                                                                       deeper than three squares e f g h not shallower than six
                                                                      squares e k l;  (And yet this I shall find too arbitary
                                                                      it must be open question I believe.)
                                                                      Convature of Bell.  We have hitherto considered the line a b as a right
                                                                      line, Aesthetically however i  is to be remembered
                                                                      that all lines which can be curved, must be so, and as
                                                                      this line is

[Version 0.05: May 2008]