...for subsequent directions and resources . . . . I began in London, buying, perhaps, four hundred volumes, which you will easily recognize. . . . . To this city-Brussels—I took a letter from M. Van De Weyer for Mons. Alvin, Conservateur of the Royal Library, who at once placed entirely at my disposition Mons. Charles Ruelens, a scholar full of bibliographical and literary knowledge, who is on the ...