Grounds made with flake white in full body are the best for flower pictures. All the works by the old masters which are now in the most perfect state of preservation, were painted either on white or very light grounds. Those by Van Huysum, and Van Oss, were on grounds of this description, as well as some of,the best by Daniel Segers. The works by J.M. Baptiste, Gaspar Verbrugen, Rachael Ruysch, Micheal Angelo Campidoglio, and David de Heem, were executed on dark grounds; and most of them have become so obscure in consequence, that mush of the work is scarcely visible.,