TO MR. E. KINNERSLEY, AT BOSTON.
_Reasons for supposing, that the glass Globe charges positively,
and the Sulphur negatively.--Hint respecting a leather Globe for
Experiments when travelling._
_Philadelphia, March 16, 1752._
The Complete Works in Philosophy, Politics and Morals of the late Dr. Benjamin Franklin, Vol. 1 [of 3] · 第 128 / 291 题