[BB.49L]                                                              [BB.49]								49
                                                                      
[diagram] fig 1.                                                      [landscape orientation]
                                                                      
[diagram]	[diagram]                                                   	Arches in St Mark
		Crockets of                                                         
		spikes                                                              [diagram]	P3  P2  P  q	      c
		with pear finials                                                   		z  x  q2  c  y     a	b
                                                                      				a2	C
[diagram]	[diagram]                                                   
                                                                      
                                                                      c C	4 “ 3 ½
                                                                      a b	2 “ 0
                                                                      a a2	3 “ 3
                                                                      x y	2 “ ¾
                                                                      z y	1 “ 3
                                                                      a x(-)	1 “ 10
                                                                      q q2	1 “ 0
                                                                      z p	3 “ 7
                                                                      z p2	0 “ 9
                                                                      p 2p3	0 “ 5 ½
                                                                      
                                                                      entire span ( 2 z C) about  7 “ 4 ) ie. breadth
                                                                      					of dark
                                                                      		        1  “  10		flat band
                                                                      		        1  “

[Version 0.05: May 2008]