PREFACE JACOB VAN RUISDAEL, Meindert Hobbema, Adriaen van de Velde, and Paulus Potter, with their pupils and imitators, are the masters who have been treated in this volume on the same principles as the masters whose works found admission to the three preceding volumes. For the fifth volume the works of Gerard ter Borch, Caspar Netscher, Pieter van Slingeland, Gottfried Schalcken, and Eglon Hendrik van der Neer have been described, and Rembrandt and Nicolaes Maes have been taken in hand for the sixth volume. The critical notice of the second volume by E. W. Moes, in the Monatshefte fur Kunstwissenschaft, iii. (1910), vols. viii. and ix. pp. 348 seq., has again provided me with many notable corrections, which will find suitable consideration in the supplement to be published at the end of this series. Other corrections, for which the critic fails to give his authority, I must regard with reserve, because a careful examination of a large number of his statements have shown me that his asser- tions, as in his criticism of the first volume, far too often lack any foundation in fact. I have been constrained to point out these mistakes in an article entitled " A Defence," attached to the Monatshefte for December 1910. I must therefore ask those who consult my book, and who have seen the critical notice by Moes, to refer to this article. I am indebted to my friend O. Nottebohm of Antwerp, in regard to the second half of this volume, and to the
