Book jacket reads: 'the nucleus of the volume is an open letter written by a prominent citizen of Luxembourg to Herr Erzberger, the leader of the party of the Centre in the Berlin Reichstag, which used to be the great Catholic party, and one of the notorious Ninety-three. M. Prum, the writer of the letter, was originally a Germanophile : but the German atrocities in Belgium, and the fact that not a German Catholic protested against them, converted him completely, and impelled him to write this letter of reproach and appeal to the leader of the German Catholics.'