Antique Glass. COVERED GOBLET IN FILIGREE, FILIGREE CANES OR STEMS, PAPERWEIGHT, DISH IN GLASS, PAPERWEIGHT VASE WITH CROCUS DESIGN
COVERED GOBLET IN FILIGREE
Probably Venice, IiaK, laic iftthorcarly 171I1
century. III. J30 mm (13 in.)
(See also colour photograph 0)
Stangenglas in filigree glass
Germany,-lale 16th century
lit. 300-J mm (1206 in.)
Filigree glass first came into use in Venice
in the second quarter of the 16th century,
and is referred to in Hiringuccio’s De la
Piroiechnica (1540). It is still made
there today, by means of the following
method. First, a stock of glass rods con-
taining decorative (usually opaque white)
twists is prepared. Small canes of opaque
white glass are heated and laid on a gather
of clear, colourless glass. These are mar-
vered into the surface, and a fresh gather
is made, so they arc embedded in the ‘gob’.
This is reheated, swung so that it lengthens,
and another rod is attached to its other
end. One man stands and rotates his rod to
give the pattern a twist. The man holding
the other end walks quickly backwards,
until the twisting gob has stretched 20 feet
or so. I leated lengths of rod are then laid
out on a metal plate. A gather of clear,
colourless glass is flattened into a disc,
then rolled along the rods, picking them up
to form a rough cylinder.
In the next stage of making filigree glass,
the rods are bedded together by being
rolled on a flat slab. The cylinder is swung
like a pendulum, to extend the glass. The
end is then cut oft”, and the cylinder is
closed, so that when it is blown the walls
become thin and smooth. A vessel is
formed from this cylinder. Thus, by
reheating and blowing an assembly ol rods
containing opaque white twists, the Vene-
tians formed vessels having a delicate white
filigree pattern within their thin walls. To
accomplish this took years of training.
The Romans made bowls by winding a
heated rod enclosing white threads spirally
on a mould and joining it by reheating, a
technique that has been called ‘filigrane
glass’.
The technique of making filigree glass
was in widespread use, and continued long
in fashion. Note the filigree ornament on
the typically German glass form illus-
trated.
FILIGREE CANES OR STEMS
Illustration taken from Mantis uj’ Classmakmg in
All Ages, by Alexander Sauzay (London, 1870)
Filigree canes were used both in the pro-
duction of filigree vessels and for simple
use as stems of wine-glasses and the like.
The actual making of the canes themselves
demanded a high degree of craftsmanship
on the part of the workers. Georges Bon-
temps of the glass factory of Choisy-le-Roy
in 1823 published a work describing some
of the Venetian techniques in the produc-
tion of filigree glass. To produce the
filigree canes, he explained, a cylindrical
mould in cither metal or fireclay was lined
with canes of coloured glass alternating
with rods of clear colourless glass. The
glass-maker next took a gather of glass on
the end of his blow-pipe which he fash-
ioned into a cylinder shape to fit into the
mould. He inserted this into the heated
mould and pressed the cylinder against the
rods which adhered to it. After marvering,
the end of the cylinder was then heated and
held with the pincers.
The glass-maker rolled his pipe with his
left hand, which caused the rod to form a
spiral with the coloured canes on the
outside; this was cut into the desired
lengths. If an internally spiralling line was
required inside a cane, a small solid
cylinder was first prepared in clear colour-
less glass, and a coloured cane attached to
its side. A further gather of glass was taken
to cover this, to make a larger cylinder
shape to go into the mould which held the
coloured canes, as before. As the small
coloured cane was not in the centre of the
cylinder, upon being twisted it assumed a
spiral shape down the centre of the
column. The other coloured rods spiralled
on the outer surface of the column, pro-
ducing a delicate and delightful effect. The
variations on the theme of opaque twists
and colour twists can be seen particularly
well in English 18th-century wine-glass
stems.
Adding: The Glass-maker’s Skill
CHAMPAGNE GLASS WITH ENGRAVED BOWL AND
DOUBLE LOOPED STEM CONTAINING TWISTED
COLOURED THREADS
George Bacchus & Sons, England, about 1850
Hi. 127 mm (5 in.)
In the early 19th century the decorative
arts in England were looking back to past
styles for inspiration. At first, glass in
England was little affected, owing mainly
to the glass-makers’ ignorance of the
historic glass styles. By the 1840’s, how-
ever, Venetian glass was considered re-
spectable for imitation. English glass-
makers’ notions of Venetian techniques
were to begin with rather vague, although
they probably improved a little after the
exhibition of Venetian glass in the Society
of Arts exhibition of Mediaeval Art in 1850.
During the years immediately preceding
the 1851 exhibition the practice was
revived of incorporating glass canes, both
opaque white and coloured, with the body
of the vessel. This hailed back to the days
of Venetian glass and the glass of 18th-
century England. Multi-coloured filigree
canes were used for stems of wine-glasses,
and sometimes the stems themselves were
twisted in Venetian styles, as above.
COMPOTIER IN ‘VENETIAN FILIGREE’
Made by John Northwood for Stevens & Williams,
England, about 1887. Ht. 20T mm (8 in.)
The firms of George Bacchus & Sons,
Birmingham, and Apsley Pcllatt’s Falcon
Glass-house in Southwark, London, pro-
duced wine-glasses with colour twist stems
in the mid-19th century. The Venetian
influence was also felt by the firm of
W. H., B. & J. Richardson of Stourbridge,
who exhibited an item with a ‘threaded
Venetian stem’ in the Society of Arts
Exhibition in 1849. From 1849 onwards
the firm of Rice Harris & Son of Birming-
ham made threaded glass, and twisted
stems were a feature of Lloyd & Summer-
field’s display at the 1851 Exhibition.
After Antonio Salviati’s exhibition of
revived Venetian techniques in Paris in
1867 manufacturers were fully aware of
the historical methods of production.
However, exact reproductions of Venetian
w;ork were rarely attempted in England for
the general market, probably because of
the unsuitability of the English lead-
crystal glass. An exception is this ‘Venetian
filigree’ compotier made by John North-
wood for Stevens & Williams
most popular designs
was the so-called ‘folded handkerchief,
where a square of glass decorated with
filigree was loosely ‘folded’ into the shape
of a vase. Vcnini, who died in 1959, was
one of the most important artists in glass
in recent times. In 1921 he entered a
partnership with Giacomo Cappcllin and
established the firm of ‘Vctri Soffiati,
Muranesi (lappellin-Venini & G’ pro-
ducing glass based on old Venetian pic-
tures. After a successful showing at the
Paris Exhibition in 1925 Vcnini estab-
lished his own factory, ‘Vcnini and C.\ in
Murano, discarded his earlier purism and
began to exploit the effects of colour and
texture in glass. He revived old Venetian
techniques, such as filigree and mosaic
work. At the time of his death his factory
consisted ol mure than .1 hundred glass-
blowers, who were experienced in most of
the ancient techniques. It was his aim to
join the old glass-making techniques with
modern Italian taste.
ewe* in millejiori oi ass with sii.VFJt-Gll.t mounts
Venice, Italy, 10th century, lit. 126 mm (495 in.)
Millefiori Glass: The name ‘millejiori1 (a
thousand flowers) was first given to mosaic
glass when the technique was taken up at
Venice in Renaissance times. The first
chapter covers the technique of mosaic
glass, in which vessels were produced by
fusing cut sections of glass rods held on to
a core with an outer mould, and then
ground and polished on both sides. The
term millejiori has, however, been applied
in retrospect to some of those Roman
mosaic glasses, where the fragments were
of rosette-like design. Egyptian craftsmen,
who for centuries were so skilled in the
mosaic technique, were later attracted to
the courts of tbe early Islamic rulers. It is
reasonably certain they were practising
1 heir technique in the 9th century A.D. at
the Abbasid court at Samarra, where finds
of mosaic glass (probably used as wall
decoration) were discovered by German
archaeologists in 1912 14.
vase in millefiori glass
E. Barovicr, Venice, Italy, late, ioth century
Ht. 203 mm (8 in.)
(See also colour photograph 10)
The millefiori glass of the Venetians, which
closely resembles Roman mosaic glass, was
produced by a different method. The
sections of glass rod were made in the
usual way, but were then embedded in a
gather of clear colourless or clear pale blue
glass, which was then blown to its final
shape. The difference in technique can be
seen more clearly in the vase illustrated,
made at the Barovier glass-house in
Murano in the late 19th century. The
simple floral decoration, in green, blue and
red glass sections, is set into a background
of sections of turquoise encircling clear
colourless glass, the whole embedded in
clear colourless glass. The general effect is
of a network of glass, rather than of
individual sections floating in a clear
colourless background. The vase is signed
‘E. Barovier, Murano’, so is presumably
the work of Ercolc Barovier (b.1889), who
helped to create the modern style of Italian
glass-making together with Paolo Venini
(1895-1959).
vase in millefiori glass
Clichy, France, c. 1845-50. Ht. 245 mm (9-63 in.)
The making of millefiori glass was not con-
fined to Italy. There is evidence that such
vessels were made in Silesia and other
areas of Central Europe in the 18th
century. The Hoffhungstal Works in
Silesia were producing millefiori vessels in
1833, and later they were made at Schone-
beck near Magdeburg. The French crafts-
men of Clichy, St. Louis and Baccarat
produced excellent millefiori glass in the
19th century; the articles included paper-
weights, inkstands, pen-rests, wafer-stands
and rulers. The vase illustrated is a rare
and beautiful example of Clichy millefiori
glass, having the name ‘Clichy’ enclosed in
a tiny cane within the design. This French
glass is notable for the quality of work-
manship, harmony of colour and beauty of
design. France’s superiority in the making
of vessel glass was a comparatively late
development. Her craftsmen had been
pre-eminent in the making of stained and
painted window glass, and later of mirror
glass, but it was only in the 19th century
that they matched their achievements in
vessel glass..
PAPERWEIGHT
Probably Rice Harris & Son, England, about 1850
Diam. 70 mm (275 in.)
DISH IN GLASS
by Antonio Salviali, Italy, f.1880
Diam. 178 mm (7 in.)
Of all the novelties in glass of mid-iQth
century England, the best remembered is
the millejiori paperweight. At the time they
were made they, were considered to be of
little importance, and were more likely to
be sold in a stationers’ shop than at a glass-
dealers’. Probably the firms that made
filigree or threaded stems experimented
with paperweights, but it is known that the
firm of George Bacchus & Sons of Birm-
ingham were making millejiori paper-
weights in 1848 and 1849. From a reference
in the An Journal in 1849 it seems that the
firm of Rice, Harris & Son of Birmingham
were also producing them at this time. As
the Rice Harris works were also known as
the Islington Glass Works, it seems reason-
able that weights found with canes lettered
IGW came from this factory, as in the
example illustrated. The fashion for paper-
weights came from France, whence they
were imported to England in great num-
bers.
In the 19th century, Renaissance styles of
glass-making were revived in Italy. The
old Venetian colour techniques were re-
vived about 1830, and by i860 Antonio
Salviati (1816-1900) had started a large-
scale commercial production of glass in
traditional styles. Much extravagant and
sentimental work was done, Salviati’s
forms being gaudy in colour and over-
elaborate. Most of the other Muranese
glass-makers followed him in making
pastiches of i6th-and 17th-century Vene-
tian glass, aimed at the tourist market. At
the same time there was a small production
of simpler glass wares in Venice, with
Salviati producing plain shapes in clear
colourless glass with applied decoration.
He was also known for his straightforward
copies of the old classic colour techniques
of Venice, such as the millejiori dish
illustrated. After the First World War,
Functionalist ideas gave a new stimulus to
the traditionalism of Venetian glass-mak-
ing and a truly modern style was estab-
lished, notably by Paolo Vcnini and
Ercole Barovier.
IRIDESCENT millefiori VASE PAPERWEIGHT VASE WITH CROCUS DESIGN
By Tiffany, U.S.A., late 19th century/early 20th By Tiffany, U.S.A. Ht. 16; mm (0-5 in.)
century. Ht. 279 mm (11 in.)
Louis Comfort Tiffany at his works in
Corona, Long Island, U.S.A., produced
many kinds of glassware between 1.1885
to 1924. Among these was millefiori glass
of a style not seen before. Tiffany’s love of
natural floral effects can be seen in this
work. Millefiori rods as intricately and
beautifully made as any on the Continent
were produced at his works and put to use-
in many different ways by Tiffany crafts-
men. The size of the rods ranged from \
inch to 4-5 inches in diameter. Small
white millefiori florets with red, green,
yellow or blue centres were embedded in
the outer surface of glass vases and bowls,
and were marvered-in to a smooth finish.
Green glass leaves and tendrils were added
as decoration to create the illusion of
flowering vines. The natural fluidity of his
work can be seen in the example illustrated.
A variation, and a most beautiful one, on
the technique of millefiori was Tiffany’s
so-called ‘Paperweight glass’. Lengths of
millefiori rod were used to simulate coral
growths, aquatic plants, morning glories,
narcissus, daffodils. Queen Anne’s lace,
animals and a host of other motifs. These
coloured decorative glass designs were
laid upon and embedded in an inner layer
of glass, with another gather of clear glass
coating over the original decorated piece.
Sometimes the inner layer of glass was
made iridescent before it received its outer
layer, which caused a lovely mirror-like
shimmering effect. The outer layer of glass
was also frequently made slightly irides-
cent. Occasionally patterns were engraved
into paperweight glass, giving striking
depth to the piece. The predominant
motifs in the paperweight technique are
floral and under-water marine life. They
are probably the rarest of the Tiffany
techniques, and the most difficult to find.
Aventurine Glass: The Venetians are
credited with the invention of Aventurine
glass. In appearance it is generally yellow-
ish, with a sparkle to it suggestive of
sprinkled gold dust. No one knows exactly
how the Venetians made this attractive
glassware, but the results of more recent
experiments may throw some light on
their methods. In i860 the French chemist
Hautefeuille made Aventurine glass by
adding iron or fine brass turnings enclosed
in paper to the hot glass. The glass turned
red and opaque, and then became milky
and full of bubbles. The furnace draught
was cut off and the covered crucible
containing the glass covered with ashes.
After being slowly cooled, the pot was
broken and the Aventurine glass taken out.
In 1865 another chemist, Pelouze, made
Aventurine equal to that of the Venetians
by using 250 parts of sand, 100 of carbonate
of soda, 50 of carbonate of lime and 40 of
bichromate of potash.
Aventurine glass was sold in rods or large
pieces to foreign factories by Venetian
glass-makers. These were broken down
and crushed into various sizes for use as a
decorative material. Green (chrome), pink
(chrome in the presence of tin) and bronze
Aventurine can be found in English,
Continental and American glassware of
the 19th century. More recently, the
Fostoria Glass Company of Moundsville,
West Virginia, made green Aventurine
glass by supersaturating a high lead glass
with chrome oxide. The chrome oxide
dissolved into the glass during the melt,
but as the glass cooled it could not hold all
the chrome oxide in solution so that crys-
tals formed in the glass; these were large
enough to reflect light and so gave the
Aventurine appearance. Aventurine is also
supposed to have been made by the addi-
tion of copper to the mix. Aventurine has
been called ‘Glass of the Golden Star’ by
the Chinese, and is also known as ‘Gold-
stone’.
JUG with trailed decoration
Egypt, second quarter of the 15th century B.C.
Ht. 88′mm (3-45 in.)
Only a skilled glass-maker could have pro-
duced the decorative effects described in the
last chapter, but much added decoration
found on glass vessels is the result of I he art
of the decorator, and owes little to actual
glass-making technology. The expertise of
the decorator in the ornamentation oj glass
vessels can be seen in the enamelling, painting
and gilding techniques, in their various
forms. Indeed, the decorator has been
involved in the ornamentation oj glass from
earliest times; it was an enameller’s hand
that decorated one of I he oldest known glass
vessels of Egypt. A purist might consider the
decoration of glass by the actual glass-maker
more valid than by the decorator, but as these
two chapters show, there has been a place for
both through the ages.
Enamelled Class: The art of enamelling
glass is a technique which can be dated
definitely back to the 15th century B.C.
The small Egyptian jug illustrated, bear-
ing the name of the Egyptian Pharaoh
Tuthmosis III, is the earliest enamelled
glass known to us. It is in opaque light blue
glass with yellow, white and dark blue
opaque trails and with white and yellow
powdered glass fired on in the manner of
enamel. It has been core-formed, with a
ground and polished surface on the rim
and underneath the base. The hieroglyphic
inscription on the shoulder, part of which
can be seen, translated, reads: ‘The good
god Men-Kheper—Re, given life’. Tuth-
mosis III (c. 1504-1450 B.C.) was one of
the most powerful of the Pharaohs of the
1 Si h I )ynasty and under him flourished all
cultural activities, including glass-making.
Enamel is in essence a low-firing glass
crushed to powder, which can be painted
on to a vessel, with the aid of a bonding
agent like honey. It can be fused to the
vessel at a lower temperature than will
cause the vessel to warp or sag in the
furnace. Enamelling appeared to be an
isolated phenomenon of the Egyptian 18th
Dynasty and fell into disuse at the end of
the period. It was certainly practised in
Roman times, and one or two different
types of work can be picked out, possibly
belonging to different schools within the
Roman Empire. Motifs include birds,
vines, pygmies, cranes, animals, hunting
scenes and figural subjects. There is no
exact knowledge of how the Romans did
their enamelling, and one can only guess
that they followed later methods of which
something is known. From earliest an-
tiquity there was a trade in cakes or ingots
of glass enamel for the use of less special-
ised glass-makers. Certain colours, notably
turquoise, sealing-wax red and white,
were traded round the world from the
earliest times of glass-making.
EWER, ‘DAPHNE’, IN OPAQUE WHITE GLASS WITH
ENAMELLING AND GILDING
Possibly Antioch, Syria, late 2nd to early 3rd
century A.D. III. 222 mm (875 in.)
Perhaps the most remarkable example of
Roman enamelling and gilding is the so-
called ‘Daphne’ ewer, now in The Corning
Museum of Glass, New York. It was
probably made in Antioch on the Orontes
in Syria. Antioch was a large city and a
centre for culture and wealth for many
hundreds of years, and the vase could have
been one of the luxury items the city
produced. The vase itself is made of opaque
white glass, richly enamelled and gilded
with a scene that depicts the story of
Daphne, who was turned by her protecting
father into a tree when the pursuing love-
sick Apollo tried to touch her. The
inscription on the shoulder, translated,
reads: ‘The Beautiful’, referring to the
lovely Daphne. The earliest written men-
tion of the techniques of enamelling comes
in the work De Diversis Artibus (Concern-
ing Divers Arts), compiled by the monk
Theophilus, probably in the first half of
the 12th century A.D. (Continued)
