Six discourses, delivered by Sir John Pringle ... when President of the Royal Society; on occasion of six annual assignments of Sir Godfrey Copley's Medal. To which is prefixed the life of the author / By Andrew Kippis [the editor].
- John Pringle
- Date:
- 1783
Licence: Public Domain Mark
Credit: Six discourses, delivered by Sir John Pringle ... when President of the Royal Society; on occasion of six annual assignments of Sir Godfrey Copley's Medal. To which is prefixed the life of the author / By Andrew Kippis [the editor]. Source: Wellcome Collection.
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![. [ 2<5i ] And did not Dr. Halley, fo long the ornament of this Society, communicate, in in the year 1686, a Paper, which he calls A Difcourfe concerning Gravity, in which, treating of the motion of projediles, he fays, that being aware of the defledion from the parabolic curve that might be occafioned by the refiftance of the air, he had made fome experiments, even with cannon-balls, to eftimate the force of that refiftance; yet conclude, 4 that in large * {hot of metal, whofe weight many thou- 4 fand times furpafted that of air, and 4 whofe force is very great, in proportion * to the furface wherewith they prefs there- 4 upon, this oppofition was not difcern- 4 iblef And again, 4 though in finall and 4 light fhot, the oppofition of the air ought 4 and muft be accounted for ; yet in fhoot- 4 ing great and weighty bombs, there need 4 be very little allowance made ; and fo 4 thefe rules (thofe, to wit, grounded on S3 4 the /](https://iiif.wellcomecollection.org/image/b28758018_0375.jp2/full/800%2C/0/default.jpg)
