[6] Since my return to England, I have been told that those who are conversant about machines use many terms concerning them which show that their vitality is here recognised, and that a collection of expressions in use among those who attend on steam engines would be no less startling than instructive. I am also informed, that almost all machines have their own tricks and idiosyncrasies; that they know their drivers and keepers; and that they will play pranks upon a stranger. It is my intention, on a future occasion, to bring together examples both of the expressions in common use among mechanicians, and of any extraordinary exhibitions of mechanical sagacity and eccentricity that I can meet with—not as believing in the Erewhonian Professor’s theory, but from the interest of the subject.