| Description | ' Sir John Pethouse, Dr Bathurst and Mr John Beal were elected, and Dr Bathurst being present, was admitted.
Captain Silas Taylor presented the Society with his History of Gavel-kind lately printed, for which he received their thanks, and the book was recomended to Dr Goddard's custody.
Mr Waterhouse presented the Company with a Manuscript attested by a publique Notary of Amsterdam containing the Realtion of an Occidental Bezoar of an Extraordinary bignesse weighin near seven pounds : and having been formerly tryed at Amsterdam (where a certain Citizen was possessor of it) by several Physicians, Apothecaries and Druggists of eh said Town , to be a true natural Bezoar. He was thanked by the Company and the Paper ordered to be filed up.
Dr Ent Suggestiing, that a true natural Bezoar, put in water, would have the same weight when weighed after, with what it had before ; the Oriental Bezoar, produced by Dr Fairclough, of 20 ounces and an halfe, was weighed and then dipped in water, and found to weigh afterward three quarters of agrain lesse, than afore.
Mr Graunt brought in his Account of the Multiplications and growth of Carps, and of Salmons. Ordered to be entered [In margin; Lib. 2. Fol. 194]
Dr Clark was desired to bring in his Experiments of Injection, as they are now ; and to make an Addition hereafter, of those, he shall try further.
Mr Hook gaue in the Pictures of the Stones, taken out of the Lord Belcarries' Heart. [In margin; Lib. 2 Fol. 200-200]
My Lord Brouncker promised to get the same done in Plaister.
Mr Hook produced his Microscopical Observation of a long-legged Spider ; having two eyes fixed on his back, and standing out upon a stemme
The Operator produced some rain-water with stor of little Insects in it ; Mr Hook was ordered to look upon them in a Microscope, and to draw the pictures of them. The Operator was enjoyned tokeep these Insects to see whether they would turn into any other kind : He was also ordered to get and keep some Baretwater, that breeds wormes, cheifly in August.
Mr Henshaw related upon this occasion that having kept once, some Dew in a Glasse, he found wormes bred in it ; and leaving it in his Study, shut close for some weeks, whilst he was in the Country, found at his returne, the Study Swarming with Gnats ; which he thought to have been produced of those wormes : and that he was confirmed in this Opinion by finding the Surface of the water, full of little Skins or bags, from which he conceived the gnats to have crept out, since himselfe saw one of them thus creep out and fly away.
Two Experiments were tryed, of Closing up some Gunpowder, and some Aurum fulminans intotwo Several iron balls, and of putting them in the fire : whereof that with the Gunpowder fired and burst ; but that with the Gold-powder , not at all ; but being cut asunder, the powder thereof was found sticking to the Sides within, and with Aqua-regis, reduced to gold : of both which, Dr Goddard was desired to bring a full Account in writing.
Sir Robert Moray should be desired to get stronger Balls made, of this kind, to prosecute the Experiment, and that the Balls should be made of one Solid peice, thicker than the former ; with a hole drilled into each of them, and the male screw very Exactly fitted for the female Screw.
Mr Hook showed the figure of an Engine for determining the forces of poser by weight : He was desired to draw it in great, and to adde some application to it.
My Lord Brouncker was desired to consider of the powder-tryalls made by Prince Rupert, wherein eleven grains of powder , put in a tryer, with a lower Ferrell raise a weight higher than as much more doth with a ferrel fixed.
Dr Wilkins was desired to provide against next day, things necessary for the lifting up of 50 pounds weight, with one grain of Aurum fulminans .
Mr Zulichems's Experimetn was tryed again, and Succeeded ; the water, tht was well purged of Air, remain-ing Suspended in a Cane of neer Seven foot, after the Engine was very well Exhausted.
It was ordered to be tryed again, and Mr Hook was desired to continue the Application of a Sucker to it : As also to take Exact notice, of all the Circumstances occurring in this Experiment, and to giue all in writing '
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