| Description | ' Mr Edward Waterhouse was admitted.
My Lord Ashly-Cooper was proposed by my Lord Brouncker and elected on the same day, according to the priviledge of Noblemen.
Sir Gilbert Talbot received the thanks of the Society, for sending them the Mace (which His Majesty hath given them) without taking any Fee.
Dr Faircloth was, upon Dr Goddard's motion, permitted to be present at this meeting ; and he shewed the Company a certain Stone (pretended to be an oriental Bezoar) of the weight of twenty ounces [crossed out; and] and an halfe ; but being rubbed upon fair white paper (according to Dr Glissons Suggestion) left no greenesse upon it : The said Dr Faircloth was desired to produce this stone again at the next meeting, that it may be looked upon with a Microscope, which Mr Hook was ordered to bring with him for that purpose.
Mr Hook produced these three Microscopical Observa-tions; 1. of the Honycomb-Seaweed ; 2. of the teeth of a Snayle : 3, of Rose-Leaves ; having at this Season of the year, when they are withering, a certain plant growing on their Back-sides.
Sir Robert Moray produced again, the Stones taken out of the Lord Belcarries' heart, and desired, that the figure thereof might be drawne. Dr Wilkins moved, that the same might be taken in Plaister : both was committed to Mr Hook.
This gave occasion to Speak of the Stone of the kidnies : where Dr Wilkins moved, that it might be tryed upon a dogge ; whether the stones of the kidnies might be cut with any Success ; whereupon, Sir Robert Moray suggested, that this Experiment deserved to be tryed, the rather, because old dogs are said to dye comonly of the stone in the kidneys ;and that himself had found a very old dogge , being dissected, full of gravell in the kidneys. Though this Operation was thought very difficult by Dr Glisson, Dr Goddard, Dr Quatermain and Dr Charleton, by reason of the Scituation of the kidneys, lying so deep in the body, and of the great Effusion of bloud, consequent upon the opening ; and of the danger in wounding the Ureter ; it being also very hazzardous to hit the side on which the stone lieth ; yet those difficulties notwithstanding, Dr Charleton was desired to try this Experiment, the next meeting, upon a dogge, which the Operator was appointed to provide for this purpose, at least to see, whether a wound in the kidneys be curable.
Sir Robert Moray related, that more tryalls had been made with Prince Ruperts Gunpowder which formerly he mentioned to have above ten times the force of other powder. These tryalls he said had been ; that whereas 30 graines of this powder raised a weight to a great hight ; halfe that quantity, with a little ferrel put loose in the powder tryer [crossed out; all] did raise the same weight to a greater hight than the whole did : but this moity with the Ferrell fixed in the same tryer, did not raise it so high as the whole would doe.
Mr Hook was appointed to think of a way to determine the strength of Powder by weight.
Dr Wilkins was desired to five directions for the lifting up of 50 pounds weight, by one grain of Aurum fulminans
Sir Robert Moray was desired to get two hollow Iron balls made, for the putting of Gunpowder into one and Aurum fulminans into the other, and to make them red-hot, to see whether the Gunpowder would melt in one, and the Aurum fulminans fire in the other.
The same and Mr Boyle affirmed, that the Aurum fulminans , being fired, might be recovered. '
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