From Emanuel Mendes da Costa6
ALS: Historical Society of Pennsylvania
Royal Society house 25 August 1765
The Committee for examining Mr. Canton’s Experiments On the Compressibility of Water are Appointed to meet at the Society’s house on Thursday next 29 Inst. at 11 O’Clock. I am Sir Your h[umble] Servant
Emanuel Mendes da Costa
6. On da Costa and the occasion for this notification, see above, p. 220.