CHAPTER IV.--The claims of Coster and Haarlem considered,

as opposed to those of Gutenberg and Mentz.--Claims based upon Tradition.--No Contemporary Authorities in their favor.--Abundance of such testimony in favor of Gutenberg and Mentz.--Probable Origin of Tradition.--Block-books.--Speculum Humanæ Salvationis.--Evidence of the Types: wood or metal; cut or cast?--Books “Jettez en molle.”--Age of the Paper.--Date of Costume.--Fraternity of Brethren and Clerks of the Common Life. 201