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[M.87L]                                                               [M.87]
Find out, still - in this window, if possible - how much of its       No 66, 67	Ducal palace. Traceries.	87
section is inside glass or fitted to it, and base of jamb.            
                                                                      Dec 17th:	I was to-day all the afternoon on the ledge of the
                                                                      		traceried window of the Doge’s palace on facade, next
                                                                      		the centre:  It is most singular in every way:  No
                                                                      		66 gives the jamb of it.  Fig 1 entire section, from
                                                                      		outside dentil to inside when the framework of glass
                                                                      		comes and confuses it: though  Fig 2: taking the
                                                                      		edge of paper at b; for b2 in fig 1, which is a
                                                                      		joint: the semicircular shaft being set in all its heights
1                                                                     		gives the section from b2 to the outside full size carefully
2 - 4                                                                 		adjusted only, observe. c d must be made = a b.
28                                                                    		and then d joined to the other d, at paper’s edge.
                                                                      		The flanked dentil is very curious, its aspect given in
                                                                      		fig 3.  The measures are given to check the eye profile
                                                                      		by:  observe also g f = 3¾ in. and f b2 is a pure
                                                                      		semicircle, 1 " 2 in round.
                                                                      No 67.		Fig 5, Shows the junction of the tracery with the above
                                                                      		section, on the abacus head:  Fig 6 gives the section
                                                                      		of the tracery bar real size very carefully:  A a
                                                                      		pure semicircle, the great outside roll which forms all
                                                                      		the tracery: The re-entering cavetto, b c like Casa
                                                                      		d Oro - especially to be noted:  d e is I think intended
                                                                      		for a pure semicircle, but the cutting is a little rough,
                                                                      		and the recess at c sometimes hardly cut, so as to look like
                                                                      		Ca d’Oro. But it is on the whole much finer.

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[Version 0.05: May 2008]