An appendix to Clavis horologiæ, or, An explication of the pyramidical dyal set up in His Majesties garden at White-Hall, anno 1669 in which very many sorts of dyals are contained ... / by the Reverend Father Francis Hall, otherwise Line, of the Society of Jesus ...

Of the First Piece.

THE first and largest of these six Pieces, or Base of the said Py∣ramis, is a round Table of about forty inches in Diameter, and some eight or nine inches in Thickness; the Edge whereof is cut into twenty equal Planes, which being made hollow, like so many Boxes of an inch deep, are covered each of them with a clear polish'd Glass, and on the inside of each Glass is described a Dyal; whereof some of them shew the Hour according to the ancient, or Jews manner of counting the Hours; other, according to the counting used by the Babylonians; others, according to the Italians; others according to the way of counting used by Astronomers; and lastly, others shew what Hour it is according to our usual and ordinary way of counting the Hours used in most Parts of Europe. These Twenty Dyals thus described on the Edge of this Table or first Piece, are all vertical declining Dyals; whose Style or Gnomon is either a Lions Paw, or Unicorns Horn, or such like relating to His Majesties Arms, and painted on the bottom of the Box, as shall be said in the next Chapter.

Moreover, upon the upper part of this Table, are placed eight recli∣ning Dyals, all made hollow, and covered with polish'd Glass like the former, but differ chiefly in this, that they shew only the usual Hour in different ways; one of them shewing the Hour by the shade of the Style falling upon the Hour-lines; another by the shade of the Hour∣lines falling upon the Style; a third without any shade either of Hour∣lines or Style, &c.

Upon this Piece stand also four Globes, out into several Panes; up∣on

one of which Globes are described several Dyals belonging to Geo∣graphy: on another, Dyals belonging to Astronomy, the other Dyals shewing several things appertaining to Astrology; as what Planet reigns every Hour, the Horoscope, Aspects of the Sun with the Stars, &c.

There are also belonging to this Piece, and issuing out of the sides thereof towards the East, West, North and South, four Iron Branches, supposing each of them a Glass-Bowl, which shew the Hour in four different ways, to wit, by the four Elements, as shall hereafter be said.