177			143
                                                                      
                                                                       		      No 115.  SAN GIOV AND PAOLO TOMBS  TRACERIES
                                                                      	No 115.	Is the leaf[n] plinth of the nameless tomb, described
                                                                      at p 52 of M. 2. In St John and Paul:  it is, (I think)
                                                                      in the southern most chapel second from choir, on the
                                                                      north wall.  Its plinth is remarkable as a  transition
                                                                      from the Byzantine cutting to the luxuriant;  very sharp
                                                                      and fine in effect;  and second lobe not yet
                                                                      projecting though this is no real criterion of age.
                                                                      since the second lobes project in early capitals[d] imitating Corinthian.
                                                                      		The three lines of the section give the plinth, the
                                                                      fruit, flower, or long leaf, and the short leaf:
                                                                      There is a central rib to each main lobe;  and a ridge
                                                                      between minor lobes.
                                                                      		Principal 4 foil Tracery Let the two circles in the
                                                                      opposite figure be given:  To complete the arches between
                                                                      1st with a radius - span of arch
                                                                      Join centres C C2 let fall Cq C2b perpendiculars.
                                                                      Make pq - CC2: with cent C  and dist Cq; desc. circle
                                                                      qb: cutting C2b b Draw a b horizontal then a b is
                                                                      abacus height, and the curves are struck from centres, a
                                                                      and b.
                                                                      		2nd with radius - a b  Find a c - 2  a b  draw c d
                                                                      		                   3                  3
                                                                      		vertical Make pc2 - a c fromcent c describe c 2 d cutting
                                                                      c d in d.  draw e f horizontal: then

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