Benjamin Franklin 
Essays by Benjamin Franklin [PDF ebook] 
Transactions of the American Philosophical Society 1786, Transactions, American Philosophical Society (Vol. 107, Part 3)

These essays have been collected and edited by the Amer. Philosophical Soc., of which Franklin was a founder, to honor the Society’s 275th Anniversary. Contents: Letter to Mr. Nairne, of London, from Dr. Franklin, Proposing a Slowly Sensible Hygrometer for Certain Purposes; A Letter from Dr. B. Franklin, to Dr. Ingenhausz, Physician to the Emperor, at Vienna, on the Causes and Cures of Smokey Chimneys; Description of a New Stove for Burning of Pitcoal, and Consuming All Its Smoke, by Dr. Franklin; A Letter from Dr. Franklin, to Mr. Alphonsus le Roy, Member of Several Academies, at Paris. Containing Sundry Maritime Observations. Illus.