: GLA 
is propagated a of annealed glass, its pro- 
be vonored visible g it to po- 
light, a me of st yee cone mentor = 
along ass, a edge o 
however, bah the radiant heat does not exist in 
‘a sensible state, exhibits the same fringes, and conse- 
pa en that = its propagation along glass, 
-radiant heat possesses’ the sin; roperty of altering 
«the structure or the sostaneall wocleise of those parts 
of the glass: where it does not exist in a sensible state. 
5 
i 
s 
When the heat is uniformly diffused over the plate of 
glass, all the coloured fringes vanish. By a particular 
‘process which we have not time to describe, he has suc- 
‘ceeded also: in communicating a permanent structure 
sto» glass, similar to that which it during the 
geen of radiant heat. The pieces of glass that 
ve beet subjected to this process, exhibit, by - 
‘sure to polarised light, the most brilliant and varied 
«colours, arranged in the finest etrical forms, and in- 
‘finitely superior, in point of beauty, to any analogous 
ion of art... . ; 
‘the construction of a chromatic thermometer, which mea- 
sures all differences of temperature, up to the melting 
‘point of the glass which is employed in its construction. 
.A full account of these iments will be found in our 
articles Oprics, Potartsation, and THERMOMETER. 
For an account of the sounds produced by glass; see 
Harmonica. 
. GLASS CutTtine. See Grass, Sect, VIII. 
» GLASS, Enoravine on. See Ercurtne, 
“» GLASS, Gitprne on. See Giipina. 
» GLASS Grinpine. See Oprics, Practical. 
» (GLASS. Tears. . See Grass, Sect. IV. 
~ GLASS Tusss, Rotation of: See Guass, Sect. IX.) 
» GLASTONBURY, a town of England in Somer- 
setshire, is situated in a low marshy country, and is al- 
most surrounded by the river Brue and its branches, 
It consists of two streets, crossing each other in the di- 
rection nearly of the four cardinal points, and the hou- 
ses are built principally of the stones from its celebrated 
. At the intersection of the two streets stands 
the cross of Glastonbury, which consisted. of a large 
_ central column piercing the roof, and sustaining a na-~ 
ked figure ; cont clustered columns at each angle, with 
strangely shaped capitals and pinnacles, This singular 
building has been allowed to fall into ruins, and only a 
of the central column now remains. The church of 
St John the Baptist is a handsome building, with a lof- 
ty tower, remarkable for its lightness and beauty. It 
contains several monuments, and numerous marks of 
its formerysplendor. The church of St Benedict, or 
the Lower Church, is in no r remarkable. 
. The ruins of the celebrated abbey of Glastonbury 
stand on the south: side of the High Street. It was 
i y constructed of wattles and wreathed twigs, 
and was afterwards built of more substantial snateriala. 
Tna, king of the West Saxons, demolished all the old 
buildin , and erected a id monastery in honour 
of our ye —— maa he added to it 
~ contain out m ver plating. -The 
altar was adorned with gold to the saahent obcaeo 
pounds weight; and the church plate was set with 
(Oke X. PART L sis 
821 
GLO 
jewels. The abbey suffered many subsequent changes, 
and a very small portion of it now remains. The 
church is a heap of ruins.. The chapel of St Joseph is 
tolerably entire, and also the abbot’s kitchen. Besides 
the two parish churches, Glastonbury possesses two 
dissenting meeting-houses, two alms-houses, and a good 
free-school. A little way to the north-east of the mo- 
nastery stands the tower of St Michael, situated on the 
summit of a high hill. The view of the tower from 
the plain below is much admired. The omen ma- 
nufactures of the town are those of silk and silk stock- 
ings. The following is the statistical abstract of the 
two parishes of St John and St Benedict for 1811. 
Number of houses .... - Dei WY: Aan 448 
Number of families ........0.. 2 499 
' Number of do. employed in agriculture .. 255 
* Number in trade and manufactures... .. 121 
sas i are ae Sa 1067 
Females ec eee ene eM et sp eC ee eee 1270 
otal propalation 2 3. s ole een 2 2337 
See Collinson’s History of Somerselshire ; Warner's 
Western Counties ; and the Beauties of England and 
Wales, vol. xiii. p. 484. 
GLATZ. See Siesta. 
GLAZING. See Porcetarn and Porrery. 
GLENDALOUGH. See Wicxtow. 
GLOBES, construction or. See Geocrapuy, p. 153. 
GLOBES, usr or rue. See Grocrapuy, p. 156. 
GLOGAU. See Suresta. 
GLOUCESTERSHIRE, one of the western counties 
of England, is bounded on the north and north-east by 
Worcestershire and Warwickshire ; on the east, by Ox- 
fordshire ; on the south-east, by part of Berkshire and 
Wiltshire ; onthe south and south-west, by Somerset- 
shire and the ‘Bristol Channel; and on the west and 
north-west, by Monmouthshire and Herefordshire. It 
stretches from north-east to south-west, from the parish 
of Clifford Chambers, near Stratford upon Avon, to 
Clifton, beyond the city of Bristol, nearly 70 miles; 
and in breadth, from Lechlade north-west to Preston, 
about 40 miles ; but its general breadth is not more than 
26 miles. In circumference it is about 156 miles. The 
form of the county is elliptical. Its area has been va~ 
riously estimated: by Sir Robert Atkyns, in his Histo- 
ry of Gloucestershire, and by the author of the agricul- 
tural report, it is supposed to contain 800,000 acres. 
According to the returns to parliament of the poor rates, 
drawn up under the inspection of Mr Rose, its area is 
estimated at 718,080 acres. According to other state- 
ments, it contains only 705,000 acres, 
Extent ané 
boundaries.. 
It is divided as follows: 1. Kifsgate division, which pivisions, 
comprehends the north and north-east parts ; this is 
subdivided into 8 hundreds; viz. Kifsgate hundred, 
upper part, which contains 20 parishes, and one mars 
ket town, Chipping Camden: Kifsgate, lower part, 
which contains 19 parishes, and ome market town, 
Winchcomb: Slaughter hundred, it part, which 
contains 10 parishes, and one market town, Stow ; 
Slaughter hundred, lower part, which contains 13 pa- 
rishes, but no market town: Tibbaldston hundred, con- 
taining 3. parishes, and no market town: Cleeve hun- 
dred, which contains only Cleeve with ‘its: tythings : 
Cheltenham hundred, containing 4 parishes, and one 
market town, Cheltenham: Deerhurst hundred, con- 
taining 4 parishes in the upper part, and 7 parishes in 
the lower , but no market town in either: Tewks- 
bury hundred, containing in the upper part 10. pa- 
rishes, and in the lower 9, and one market town, viz. 
‘Tewksbury; Westminster ore containing in the 
s 
