178		144
                                                                      
                                                                              TRACERIES GENERAL PLAB  MOULDINGS
                                                                      		e f is the abacus height and the curves are struck
                                                                      from d and its correspondent:
                                                                      It is evident at a glance that this is a curve
                                                                      never used perhaps intermediate fronts, maybe.  This I
                                                                      must ascertain if possible.
                                                                      The general idea of the tracery being that of a
                                                                      variously moulded cross on a square abacus let the cusps
                                                                      and[m]rolls be fixed as ab  c d e f g h opp. on a square
                                                                      abacus from whose edge they are equidistant:  Then there
                                                                                   is evidently every conceivable degree of depth in the
                                                                      cavetto of the intermediate moulding:  as first, d e
                                                                      with the cavette shallow:  the bend small, and a deep
                                                                      interval between it and cusp:  This I imagine the earliest
                                                                      form 2nd g f cavetto deeper:  and interval smaller 3rd 
                                                                      b c:  deeper cavetto and interval gone.  This is rare.
                                                                      4th x h one side of bead mark in cusp a frequent form.
                                                                      Then observe that in order that the disporportion may not
                                                                      be so great between the great and smaller roll:  in the
                                                                      form d e; the larger roll ususlly is a little diminished
                                                                      and the bead enlarged, while c b is in about true propor-
                                                                      tion for c d
                                                                      Understanding this, we may take as an instance first a
                                                                      small house near the Teatro Mahdron, with an early
                                                                      group of 4 foil

[Version 0.05: May 2008]