[PB.6L]                                                               [PB.6]								6
                                                                      
[landscape orientation]                                               [archivolt of lower story of Ducal palace]
                                                                      
[diagram] Fig 2      s H r q p o y x n m 2                                 Measures taken on this
                                                                      
mn circular (?)		3 ½                                                  [diagram] Fig 1    2    k   I   h   g   b   f   e   d   c   b   a
n o (-)			11                                                          
o p				7/8                                                            			inches
p q				1/2                                                            a b (?)			9 ½
q r			2                                                               b c			2 ¼
r s			1    “	5 ½                                                      c d (-)chord		1 ¼
ss 2				1 ½                                                           d e (-)			1 ¾
x y				3 ½                                                            f g (-)			6 5/8
                                                                      g h			1
[diagram] Fig 3  [?] to rough stone 2in                               h v (?)			7
                                                                      i k			1
Observe. no. here would be a tangent                                  k l		1   “	5 ¾
to curve at n                                                         
st. is the back of the archivolt                                      The depth of cavetto
s2. y. is the abacus head.                                            f g: from its chord
ss 2. and xy. are verticals to the abacus edge                        to centre is =  c d (-)
                                                                      or  1 ¼ .
                                                                      
                                                                      One side of the hexagonal abacus at its top, 1  “ 7 ½
                                                                      Observe of the dog teeth d e: they are higher
                                                                      than broad: being - along base, only 1  ¾  broad
                                                                      which, counting along (up) the arch, there are
                                                                      just six to a foot.
                                                                      a to b is a pure semicircle.
                                                                      
                                                                           For further details of this section vide Nos
                                                                      89.  90. Page 113. M.
                                                                      
                                                                      						Done.

[Version 0.05: May 2008]