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are those in which the central windows rise above the side 
ones. The windows of the Temple Church, London, are 
remarkably beautiful, and are thus arranged. (See plate 2, 
No. 1.) The central light is equilateral, the circles being 
completed and a vertical line drawn through the points of 
intersection, and two circles of equal diameter being drawn 
touching this straight line (and also the primary circles), 
the arcs of the side lights are found ; and the centres of 
these last circles are also the centres of the mullions between 
the lights. An isosceles triangle being formed, whose base 
is the distance between the centres of the mullions, the sides 
of the triangle produced cut the sides of the side lights at 
the level of the sill. Ko arrangement could be more beau- 
tiful than this — none could be more scientific ! 
I must request especial attention to the principles upon 
which the two next examples are formed, as they are perfect 
parallels to the Norman arcades. No. 6 (plate 2) is from 
the south transept of York Cathedral ; (the clerestory win- 
dows, or those over the great arches separating the nave 
and side aisles.) This example consists of three lights 
and two pointed recesses; the whole of which are formed 
by a series of intersecting circles. The label mouldings 
are so many bands crossing each other, but intercepted in 
execution : a reference to plate 1, Nos. 3 and 4, will prove 
the Norman arcades and these pointed windows to be 
formed upon the same principles, as in both instances we 
find two pointed arches under one enclosing semicircle. It 
is impossible to judge of the eflfect of these windows stript 
of their ornamental accessories ; but I would mention that 
the pointed recesses or arcades, on the side of the three 
lights, are portions of circles of the same radius as the 
lights, (the arcades have no deeply receding jambs), and that 
great variety is thereby given in the " chiaroscuro :" remove 
the dotted lines from this example, and no one would detect 
