The science of grammar affords another instance of the existence of special laws in the formation of systems. Some languages have more elasticity than others, and greater capabilities; and the difficulty of explaining the fact cannot lead us to doubt it. There are languages, for instance, which have a capacity for compound words, which, we cannot tell why, is in matter of fact denied to others. We feel the presence of a certain character or genius in each, which determines its path and its range; and to discover and enter into it is one part of refined scholarship. And when particular writers, in consequence perhaps of some theory, tax a language beyond its powers, the failure is conspicuous. Very subtle, too, and difficult to draw out, are the principles on which depends the formation of proper names in a particular people. In works of fiction, names or titles, significant or ludicrous, must be invented for the characters introduced; and some authors excel in their fabrication, while others are equally unfortunate. Foreign novels, perhaps, attempt to frame English surnames, and signally fail; yet what every one feels to be the case, no one can analyze: that is, our surnames are constructed on a law which is only exhibited in particular instances, and which rules their formation on certain, though subtle, determinations. And so in philosophy, the systems of physics or morals, which go by celebrated names, proceed upon the assumption of certain conditions which are necessary for every stage of their development. The Newtonian theory of gravitation is based on certain axioms; for instance, that the fewest causes assignable for phenomena are the true ones: and the application of science to practical purposes depends upon the hypothesis that what happens to-day will happen to-morrow. And so in military matters, the discovery of gunpowder developed the science of attack and defence in a new instrumentality. Again, it is said that when Napoleon began his career of victories, the enemy's generals pronounced that his battles were fought against rule, and that he ought not to be victorious. 5.