1638

INDEX.

Page

Arch, antiquity of 22. 32.

70. 73. 194.

-of Conin gsburgh

Castle - 410

-, construction of 1521

-, development of 1435

-, equilibrium of 1427.

1505

•-, flat - - 1430

-, of bridges 1486

-formed of flex-ible timber - 419

-, groined - - 1442

-, hexagonal - 1455

■ -, pointed, at Ar-

peno - - 70

-, semi - - 1428

-, skew - 1436. 1457

-, triumphal - 145

- - -, their

proportions - 1596—, three arcs of a

circle - - 1487

——, wedges which

form - 152

-, weights applied

to- - - 421

Arch, triumphal, of

Augustus at Pola 1598

-, of Augustus at

Aosta - - 1597

-, of Augustus at

Susa - - 1599

-, of Poliphele - 1595

of SeptimusSeverus - - 1599

-, of Sergius at

Pola - - 1598

-, of Titus at

Rome - - 1598

-, of Trajan at Be-

neventum - 1600

-, proportions

given to - 1596Architecture - - 1579

—, Cyclopean - 67

-, Gothic - - 1602

-, Greek - - 79

-, hydraulic - 205

-, Roman - - 1590

-, Saxon - - 1601

Archimedes - - 58

■ ’, screw of - 1567

Arctic Ocean - - 635

Area of land, how

computed - - 848

Areas of a sphere - 876

Argand fountainlamps - 244

Argives 68

Argos, city of - 72. 75

Argosies, or ships - 144

Aristotle , death of - 47

Arithmetical propor-tion - 766

Arnold’s escapement 982

Arsenals - - 138

Page. 238

Arsenic - - -

656

Arsinoe , city of

51

Artemisia, Queen

196

Artesian wells - 291

, 292

Articulata in Geology

621

Artificers’ work, valueof—

Beton

909

Binding-pieces,

labour -

902

Brickwork

908

Carpenters’ work

897

Cofferdams

900

Dredging

897

Earth , removal of

896

——, levelling -

897

Entretoises

901

Fascines -

898

Fences

898

Foundations, car-

pentry of

902

Groined work -

896

Iron work

910

Joists, labour on

904

Piling

899

Planking -

899

Planks

904

Platforms

902

Stonework

908

Timber, labour

on

903

Timber, carriage

of -

904

Timber, raising

903

Turf, laying

down

897

Artificial globes

756

-islands

136

—-stone

724

Ash, wood of - 100.

1284

Asphaltum

728

Astrolabe

825

-, to measure dis-

tances -

827

-, to measure

heights -

825

-, to measure

depths -

828

—— —, to measure

widths -

827

Athens, city of

41

Atlantic Ocean

635

Atmosphere, density

of

207

-, as a moving

power - -

1216

Atomic weight

643

Atwood, experiments

on falling bodies -

921

Augusta Pra3toria -

89

Augustus, house of -

93

Aulis, mole of

47

Aurelian, walls of

86

Autun, city of

92

Avernus, lake of 139,

, 140

Page

Axis, horizontal

957

•-of rotation

939

Axles -

1271

Azimuth circle

809

Bacciali, Giovanni -

206

Backwater, its effects

322

Bag and spoon

1058

Balance-bridge of iron

326

Ballast machine

1058

Balneum - 121

. 131

Baltic Sea

635

Banks, slope of «■*

1142

-to resist inunda-

tions -

324

Baptistery at Pisa, sec-

tion of

1617

Barium -

651

Barnabeta

206

Barometer - 207. 845

- to measure

heights

845

Bars, Bootham

404

., Micklegate

405

-, Monk

405

-, Walmgate

407

Barton, Spanish

931

Bascule for pumping

1195

Basilica of Constantine 93—

100

- at Fano -

104

-of Paulus Emi-

lias

100

Basin of Hull Docks

326

Bath Abbey Church

1632

Baths, manner of heat-

ing < -

125

-of Agrippa

120

-, Badenweiller -

130

-of Caracalla

93

■-at Chester

128

— of Constantine -

93

-of Dioclesian -

93

-, Greek

122

-of Hippias

122

-• of Julius Csesar

120

—.- of Livia -

94

-of Nismes

131

-of Paulus Emi-

lius

120

- —, Roman -

120

-of Scipio

125

■-of Stura -

330

-of Titus -

94

-, Wroxeter

128

Battering engines at

Rhodes

47

Beach, sea

642

Beams, strength of -

1258

—., fishing -

1304

-, motion of steam-

engine -

994

Bearings of carriages

1023

Beauvais Cathedral -

1614

Beech, wood of 101.

1284

Beetle , three-hand -

1071