No collection of pictures by the painters of the Dutch and Flemish schools is considered to be complete without an example of this charming and natural painter. Lord Hatherfon is said to possess the finest specimen, for which he has refused an offer of £3000. Dr. Waagen is of opinion that it is unsurpassed by any landscape in the world. The " Old Mill," in the Royal Collection, is a good picture, very carefully painted, and doubtless, at one time, was sunny and brilliant in colour, but the shadows have become very dark. It is painted on panel, and is in Buckingham Palace.