|Description|| ' Monseir Huygens Experiment was produced with a Sucker applied to the glasse-cane ; but the water would not leave the top upon the Suction. The President was desired to make this Experiment with Mercury by himselfe, and to informe the Company of the Success thereof ; which he undertook to doe.|
The Experiments with the two balls and two powders was referred till next meeting ; the Balls not being ready for this day.
The President and Mr Boyle were desired to consider of the odde Phenomenon in Monsr. Huygens's Experiment, for the finding of a Solution thereof.
Mr Boyle mentioned the Expanding of Spirit of wine in a Sealed glasse, in his Engine upon the Exhausting of the Air. It was ordered tht the Experiment should be tried before the Society.
Mr Charles Howard produced a letter confirming his former Relation concerning a water and an Earth near Wiggon in Lancashire, which would light a Candle at halfe a yards distance etc. ordered that an Extract should be made of the Letter and registered.
Dr Ball mentioned that there is a place neer Genobleof the like nature, taken also notice of, by Gassendus, in his Philosophia Epicuri
Mr Boyle proposed that two Canes with Quicksilver might be kept for a while, one at Gresham College, the other he offered to keep himselfe ; to observe carefully how they would vary, as to the Assent and sescent of the Quicksilver in several weathers. The Company thought good to put it I Execution.
The same proposed that a Sealed Thermometer with Spirit of wine, might be kept in a good Collar for a whole yeare, to observe diligently how it would vary there in Summer and winter. This also was ordered to be executed, and the Thermometer to be put in the Cellar of Gresham College.
The Secretary mentioned that Mr Beal was willing to engage in the Observation of the weather and in registering the Changes thereof, and that he hoped to set the same on work in other parts of the Country, desiring to be furnished with Thermometers of the same figures and size. Whereupon Mr Hook was ordered to give the Opertor directions, to provide a dozen sealed Thermometers with Spirit of Wine, to be sentto Mr Beal, and into other parts of the World.
Mr Hook brought in a Scheme of the Instrument for the determining of the force of Gun-Powder, by weight together with an Explication thereof : which was ordered to be entered. [In margin; Lib. 2 Fol. 196]
The same produced a Microscopical Observation of the Several parts of a Fly '