Ingenhousz

“I am persuaded that no common Air from without, is so unwholesome as the Air within a close Room, that has been often breath’d and not changed,” he wrote in a letter to Dutch physician Jan Ingenhousz.

In 1783, Jan Ingenhousz, a Dutch scientist, accidentally picked up a charged Leyden jar, causing an explosion that made him temporarily lose his memory, judgment, and ability to read and write.

Difficulty of Quantitative Estimation of Heat Transmitted.—The conducting powers of different metals were compared by C. M. Despretz, and later by G. H. Wiedemann and R. Franz, employing an extension of the method of Jan Ingenhousz, in which the temperatures at different points along a bar heated at one end were measured by thermometers or thermocouples let into small holes in the bars, instead of being measured at one point only by means of melting wax.

With the nineteenth century, and the founding of the modern theories of nutrition by Ingenhousz, Priestley, and De Saussure, we find a new era started.

It is not, be it noted, that the new study proposes to ignore or abandon the old studies: modern physiology owes too much to the physics and chemistry on which it is partly based, and to the labours of De Saussure, Ingenhousz, Priestley, and others, for that.