AN ACCOUNT OF THE PLATES; WITH DIRECTIONS FOR PLACING THEM.
1st. An Account of the Plates.
1. (a) A Circular View from the Balloon at its greatest Elevation, ([Page 58].) The Spectator is supposed to be in the Car of the Balloon, suspended above the Center of the View: looking down on the Amphitheatre or white Floor of Clouds, and seeing the City of Chester, as it appeared throu’ the Opening: which discovers the Landscape below, limited, by surrounding Vapour, to something less than two Miles in Diameter.
The Breadth of the blue Margin defines the apparent Height of the Spectator in the Balloon (viz. 4 Miles) above the white Floor of Clouds, as he hangs in the Center, and looks horizontally round, into the azure Sky.
2. (b) The Balloon over Helsbye-Hill in Cheshire, at half past II. on Thursday the 8th of September, 1785. ([Page 78].)
It is seen in the South-west-Quarter.
The View was taken in a high Field, at the End of Sutton-Causeway.
Helsbye-Hill, tho’ upwards of 600 Feet high, appeared from the Car of the Balloon, to be on the same Level with the Grounds below.
3. (c) A Balloon-Prospect from above the Clouds, ([Page 154,]) or Chromatic View of the Country between Chester, Warrington and Rixton-Moss in Lancashire: shewing the whole Extent of the aërial Voyage; with the meandering Track of the Balloon throu’ the Air.
4. The Explanatory Print (d), ([Page 155]:) which elucidates the former by giving the Names of the principal Places mentioned in the Excursion.