1738. They represent or constitute such things inasmuch as the external skin communicates by fibers and vessels with the interiors and inmosts of the brain, from whence come its sensations. The skin and its coats imbibe also the most subtle things of the world, and transmit them to the brain, to say nothing of their brain exhaling a very attenuated kind of faeces, as appears from the santorian perspiration [?].