^{page 139 note *} The word Law is, generally, very inaccurately used, and even cultivated men frequently speak of laws opposing and neutralizing each other. The precise scientific use of the term may be thus illustrated:—In the physical sciences, Gravity is a Force exerted by particles of matter upon each other, whose Law, or uniform mode of action, is, that it varies directly as the mass and inversely as the square of the distance. Similarly employed in respect of mortality, we should represent Death as a Force operating upon all creatures, and its uniform mode of action (if such a mode could be discovered) as the Law of Mortality.