Pennethorne, John; Robinson, John [Ill.]: The geometry and optics of ancient architecture: illustrated by examples from Thebes, Athens, and Rome (London [u.a.], 1878)

58

THE APPABENT PBOPOBTIONS,

For the convenience of reference, these quantities are here tabulated to suit each
selected design.

Table shewing the Position of the seveeal Points of View.

Parthenon.

Point

of
sight.

/No. 1

See Part I., Plate V.

Position of the point of sight for
each design.

Given angles ABO and
AOB for each design.

The north-west angular view
designed from the centre of the ABO = 95° 31' 40/;

Road, and close to the pedestal of
the brazen statue of Minerva.

No. 2. The south-east angular view,
designed from the centre of the
Road, and close to the works of)
Sculpture mentioned by Pausanias
as near the wall Notium.

0 = 45° 0' 0''

ABO

0

Level of the point

of sight above or

below the Upper

Step of each design.

19-3 feet

below the Upper
Step

00°

30' 30"

45°

0'

0"

9-2 feet

below the Upper
Step

/No. 3. The north-east angular view of
the East Portico of the Erechtheium,
designed from the centre of the Road
and near to the north fortification
WaU.

No. 4. The north-west angular view of
Erechtheium . {

the North Portico, designed from a

point of sight near the north fortifi-
cation Wall.

No. 5. The south-east angular view of
the South Portico, designed from
the centre of the Road.

ABO
O

98° 0' 0"

45° 0' 0"

8-0 feet

above the Lower
Step

ABO
O

67° 30' 0" | 4-5 feet

above the Lower
Step

45° 0' 0"

No corrections.

Propylsea

,No. 6. The central view of the West
Portico of the Propylsea, designed
from a point of sight on the level
platform.

ABO
O

67°

30'

0-''

45°

0'

0"

<

No. 7. The south-west angular view of
the north wing of the Propylsea, the
point of sight is in the centre of
the inclined Plane between the two
flights of the marble Steps.

21-84 feet

below the Lower
Step

ABO
O

81° 40' 10;/ 17*59 feet

? below the Lower

45° 01 0" step