340

The obseruations made the Last Day on graine gold were discoursed
of and It was obserued by mr Henshaw that the first gold brought
from Peru was graine Gold, but afterwars the Industry of the
planters found out the minerall out of which It would be fetcht
by quicksiluer.
Sr. Iohn Hoskins said from the Report of some other person
that the Lead mines in wales conteined more /a greater proportion of/ siluer than most
other mines in Europe & as much as most of the spanish siluer
mines. -
mr. Hooke then Read a further Discourse of Padrey Lana a
bout flying which he had translated And added to it a Dis=
course of the Impossibility of that Attempt by that meanes
and also shewd wherein the Authour had been greatly mistaken
in the Grounds and suppositions of his Demonstration, to wit
in supposing the same thicknesse of metall to be sufficient
to resist the pressure of the air inward in a ball of 24 foot
Diameter as in a ball of one foot Diameter, whereas on the
contrary it is necessary to increase the weight of the shell more
then the weight of the according to the proportion of the solidity
of t or capacity of the ball. -

Dr. Grew Read a paper of his /conteining/ obseruations of most of the
minerall waters about London - which was as followeth -




Sr. Iohn Hoskins Propounded mr. Iohn Wheeler to be a
candidate of this society. -

Ref: CELL/RS/HF_342  © Centre for Editing Lives and Letters