GRAVITATION, n. The tendency of all bodies to approach one another with a strength proportion to the quantity of matter they contain— the quantity of matter they contain being ascertained by the strength of their tendency to approach one another. This is a lovely and edifying illustration of how science, having made A the proof of B, makes B the proof of A.

GUILLOTINE, n. A machine which makes a Frenchman shrug his shoulders with good reason.

GUNPOWDER, n. An agency employed by civilized nations for the settlement of disputes which might become troublesome if left unadjusted. By most writers the invention of gunpowder is ascribed to the Chinese, but not upon very convincing evidence. Milton says it was invented by the devil to dispel angels with, and this opinion seems to derive some support from the scarcity of angels.

HABEAS CORPUS. A writ by which a man may be taken out of jail when confined for the wrong crime.

HABIT, n. A shackle for the free.