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RefNoJBO/9/2
LevelItem
TitleMinutes of a scientific meeting of the Royal Society
Date23 July 1690
Description ' Sir John Hoskins in the Chaire

The Experiment was tried of shooting a Candle through a board, it was made with a Carabine of Musketbore and about half a candle weighing about an ounce, and it was found, that it went through a board of about 7 tenths of an inch thick, and battered itself with great force against the wall.

Mr Bullock who formerly November 10, 1686 made a proposall about encreasing strength, this day came before the R Society, and said he had made a modell of his Invention, and was willing to shew it to the R. Society producing a Figure thereof. It was ordered, that Mr Hook, Mr Waller, and Halley be a Committee to see this engine, and make a report thereof.

Mr Hook read a Discourse concerning the late Earth-quake at Nevis and the Leeward Islands explaining the severall phenomena recited in the Gazet of June 30 by the supposition of an explosion of vapours under ground like a subterraneous lightning.

Mr Hook in this Lecture supposed that the Veins in Marble are occasioned by Earthquakes shaking and breaking the Stone With clefts are afterwards fllled up with a petrifying Juice.

Halley produced a Pocket book of his wherein among other Mathematicall things there is a long Since written a proposition lately published in the Acta Lipsiensia as new by one Mr Bernoulli, who values himself upon the Invention: The Proposition is, that the Parameteer, or latus rectum of any Conick Section is always equall to the Diameter of the Circular base of the Cone cutt at the Same perpendicular Distance from the Apex thereof, whence it is, that all Conick Sections passing at the same distance from the Apex have the Same latus rectum. '
Extent2p
FormatManuscript
AccessStatusOpen
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