1A Defense of Mr. Hemphill’s Observations, [30 October 1735] (Franklin Papers)
A Defence Of the Rev. Mr. Hemphill’s Observations: or, an Answer to the Vindication of the...
2[Of the Usefulness of Mathematics, 30 October 1735] (Franklin Papers)
Printed in The Pennsylvania Gazette , October 30, 1735. First reprinted by Duane ( Works , IV ,...