d two smaller cupolas in front, whilst
a secondary dome which is larger and higher than the central one
surmounts the annexe behind. The domes and cupolas constitute the
summits of what are called by architects 'tambours;' the tambours of the
cupolas are round, that of the central dome octagonal, and that of the
hinder secondary one pentagonal. From all the domes alike there spring
inverted pear-shaped stones, each bearing a cross which consists of an
upright rod traversed horizontally by three smaller ones; the crosses
bear balls and chains, and symbolise the Trinity. On the ground,
opposite the portal, and within the stone balustrade which surrounds the
church, there is an exquisite little open structure resembling a shrine.
This consists of four plain Arabic pillars supporting a series of
mouldings which form a square cornice, and crowned with a dome,
pear-shaped ornament, and cross, precisely as in the cupolas of the
church itself. The windows in the body of the church and on the tambours
of the domes are very narrow, and those on the tambours or cylinders of
the smaller cupolas are curved and slope obliquely at an angle of
seventy degrees, which gives the spectator the impression that they are
leaning, somewhat in the same manner as the well-known spire at
Chesterfield. The ornamentation on the outside surpasses all powers of
description. It comprises a large corded moulding, about halfway
between the pediment and the cornice, passing right round the main
building; and circular shields above this moulding, which, along with
the windows, are decorated with the most exquisite tracery, wherein
flowers (chiefly lilies), leaves, and convoluted bands play a
conspicuous part. Everywhere, on the cornices, tambours, and balconies,
chaste wreaths and crowns of lilies add beauty and lightness to the
fabric, and give to the whole the appearance of a fairy structure.

[Illustration: TRACERY ON EXTERNAL SHIELD.]

Within, the building is less interesting; it is dimly lighted by the
narrow windows, artificial light being furnished by means of numerous
candelabra during divine service. The secondary dome is supported by
twelve Arabic pillars, and the walls and domes are decorated with
frescoes of the orthodox kind--the Saviour, Virgin, and Apostles, with
scenes from the Old and New Testament, also with portraits of princes
and bishops of the See. The length of the building inside is about 76
Vienna feet, the greatest breadth 41 fe