1.
First Prologue.
1:01
2.
The dial is only visible by starlight.
1:16
3.
Every day at noon the sun shines through these apertures for the space of about a minute.
0:38
4.
The image of the sun indicates the sun's position as it passes through a hole in the concurve surface.
1:15
5.
There is a brass pointer fitted with sights and pivoted to the centre of the circle by which altitude observations are made.
0:49
6.
The chamber is no longer accessible to visitors.
1:00
7.
Access to any part of the engine is by steps which offer vantage points for various readings.
0:49
8.
Suspended in the hum of history.
1:10
9.
Originally cross wires stretched across each hemisphere, East to West and North to South.
1:17
10.
The ramped stair to the North of the two drums vanishes at thirty-two feet.
1:03
11.
These steps enable the observer to see all aspects of the brass calibration below.
0:39
12.
There is a huge calibrated sundial on each of its sides.
0:59
13.
This chamber is filled with garden tools and broken furniture.
1:00
14.
The mosaic of starlight slips back like the lid of an opening eye.
0:59
15.
This engine is primarily a calculator, though altitudes may be observed using the sighting bar fitted to the back.
0:59
16.
It is inscribed with concentric circles, at the centre of which lies a pointer.
1:01
17.
The calibrated parts are raised on three-foot pillars.
1:00
18.
The pink masonry charges the twilight with a faint sound.
0:59
19.
Another slope with stars for the reading of figures.
1:00
20.
This engine is now only visible in twilight.
1:00
21.
Here is an immense brass circle suspended vertically from stone supports.
0:48
22.
Two hemispheres representing the sphere of heaven comprise the two halves of this engine.
1:10
23.
This wall describes accurately the North/South meridian.
0:59
24.
There are pillars at the centre of each circular wall each open to the sky.
0:49
25.
First Memory.
1:09
26.
The sky has shaped this place.
1:00
27.
Here I find a central iron pole with hooks facing to the North, South, East and West.
0:59
28.
A shadow is cast to the West before noon.
0:58
29.
The shadow can fall in the vacant sector of a drum.
1:01
30.
Days and nights are measured here, and in the measuring seem longer, suspended somehow.
1:00
31.
The whole brass circle can be revolved around its vertical diameter so that altitude observations can be taken of any object at any time.
0:59
32.
A lofty but narrow chamber is contrived in the thickness of the walls and access is gained from a door opening from the masonry platform on which the engine stands.
0:36
33.
A further series of steps is only visible during the vernal equinox.
0:23
34.
Hold the machine in the vertical plane.
1:00
35.
Visible portions of the celestial sphere are represented by this map which has a movable elliptic which pivots at the point representing the pole.
1:01
36.
To move through these structures is to set them in motion.
0:58
37.
The altitude of the body observed is given while observing the vertically hanging bar through the two brass rings.
0:59
38.
A shadow is cast to the East after noon.
0:59
39.
These calibrations are no longer clearly visible.
0:59
40.
Another flight of observation steps and the sense of quiet rotation as I ascend.
1:00
41.
I study the vaults of a shell in which we float.
0:59
42.
Twenty-seven degrees, thirty-seven seconds.
1:00
43.
The roofs of the enclosed drums are implied by shadows.
0:59
44.
The floor and walls are calibrated to read altitude and azimuth.
0:59
45.
These are the cool engines of celestial map-making.
1:00
46.
Here is the Supreme Engine.
0:59
47.
The sun seen through the pair of brass rings is used by the bar to indicate the time from sunrise until sunrise.
1:00
48.
A pointer indicates on three arms: West, North and East.
0:59
49.
Here was the Supreme Engine.
0:58
50.
The engine of amplitude has a function which is no longer known.
1:00
51.
This engine is a rectangular brass plate.
0:59