Mr. WILL IRWIN'S war-book naturally divides itself into two parts, since he was lucky enough to get near the Front both about Verdun during the great attack, and with the Alpini fighting on "the roof of Armageddon." To these brave and picturesque friends of ours he dedicates his study, _The Latin at War_ (CONSTABLE). You must not expect much of that inside information which the author, as an American journalist, must have been sorely tempted to produce. Indeed he has little to offer us that has not been common property of the Correspondents for long enough, and several of his descriptions (his picture of a glacier, for one), given with a rather irritatingly childlike air of new discovery, cannot escape the charge of commonplace. But his reflections, for once in a way the better half of experience, more than make good this defect. His essay on Paris, for instance--"the city of unshed tears"--is something more than interesting, and his analysis of the cause of the successes of the French army, in the face of initial defects of material, even better. The author of _Westward Ho!_, considering the Spanish and English navies of ELIZABETH'S time, found precisely the same contrasted elements of autocracy and brotherliness producing just those results that we find respectively in the German and French forces of to-day--on the one hand a mechanical perfection of command, on the other an informed equality which, somehow, does not make against efficiency whilst fostering individuality. Mr. IRWIN hardly refers to our own Army; but one is thankful to remember that discipline by consent, one of the virtues of true democracy, is not the exclusive tradition of our French allies. * * * * *