What of the merits of this first attempt in a line that was new to him? In the first place, he had at least been guided in his choice of subject by an unerring historical instinct. For, surpassingly rich as is Scottish history in the elements both of picturesque and romantic incident and of wild and fascinating character, it is none the less a fact that there is but one period during which that history rises to the dignity of a really wide and permanent interest. And that period is of course the century, or century and a half, of the national struggle for religious liberty. It is not necessary to remind the reader that upon that struggle, and on those who maintained it, much has been written as well in the terms of undiscriminating eulogy as in those of uncomprehending condemnation.