“As far back as 1624… Louis Savot invented the first heat-circulating fireplace. His unit was installed in the Louvre, Paris, and became the prototype for Ben Franklin's 1742 Pennsylvania stove. The 1624 French fireplace achieved 30 to 45 percent more efficiency than do most American tract home fireplaces of today! Savot surrounded the grate of his creation with a metal chamber, which had warm air outlets above the fire opening. He also supplied the fire with air from under the floor. Thus, room drafts were reduced and combustion efficiency was further improved. Few people are aware that practically all of the technical features of Franklin's Pennsylvania stove were copied from earlier inventors.”

The Owner Built Home: A How-to-do-it Book (1972)

Life, "Author Rex Stout vs. the F.B.I."

Source: The Nimrod Flipout: Stories

The Owner Built Home: A How-to-do-it Book (1972)

Source: The Woman in White

And is not this Medium the same with that Medium by which Light is refracted and reflected and by whose Vibrations Light communicates Heat to Bodies, and is put into Fits of easy Reflexion and easy Transmission? ...And do not hot Bodies communicate their Heat to contiguous cold ones, by the Vibrations of this Medium propagated from them into the cold ones? And is not this Medium exceedingly more rare and subtile than the Air, and exceedingly more elastick and active? And doth it not readily pervade all Bodies? And is it not (by its elastick force) expanded through all the Heavens?
Query 18
Opticks (1704)

Source: The Battle of the Labyrinth