The works of the Honourable Robert Boyle, Esq., epitomiz'd by Richard Boulton ... ; illustrated with copper plates.

An Experiment made at the Spire of the Ca∣thedral Church in Sarum.

HAving procured all the Surveying Chains we could, and a proper Frame for a Baro∣scope, we went into the Church, where when the Tube was inverted, as in the Torcellian Ex∣periment; the Mercury stood at 30 Inches, and 50 Centesms of an Inch: Being drawn up to the first floor which is 1033 ½ Inches, it subsided 9 Cents of an Inch; being drawn up 935 Inches higher, it sunk 8 Cents more; being drawn up 2313 Inches higher yet, it lost 23 Cents, and when it was let down again the Mercury reas∣cended to it's former Station at every one of the Marks.

At another time an inverted Baroscop being made use of, such as Plate 5, Fig. 6, delineates, having set a Mark where the Mercury stood be∣low, when it was raised.

Inches		Inch.	Cent.
1033 ½	The Liquor Ascended	1	25
1••68	2	39
2467	3	22
4281	5	64
4800 or 400 feet	6	40

On the great Continent not far from the Sea, before a great Storm, in which the Wind blew along the Continent, the Mercury was Raised two Inches above it's usual Station; but when the Wind blew from the Sea, the Mer∣cury subsided; which hath been observed by an∣other Gentleman in England, where in the In∣land Parts likewise the Mercury subsided before a Storm.