A few scholars still explore it with delight, as a mine of classic wealth; but the style is hopelessly involved, and to the ordinary reader most of his numerous references are now as unmeaning as a hyper-jacobian surface.

But among the remaining parts of Pure Mathematics we have the theory of Elliptic Functions and of the Jacobian and Abelian Functions, and the theory of Differential Equations, including of course Partial Differential Equations.

The selection from the poets of the Elizabethan and Jacobian periods is particularly full; and this is as it should be; for at no time was our language more equally removed from conventionalism and commonplace, or so fitted to refine strength of passion with recondite thought and airy courtliness of phrase.