The _Banks of a River_ (No. 2561D) is a superb example of the art of Salomon van Ruysdael (1600?-1670), one of the founders of the Haarlem school of landscape, and the uncle of Jacob van Ruisdael. The _Large Tower_ (No. 2561C) gives a better idea of his power than the _Ford_ (No. 2561B). Another painter in the same school, Cornelis Decker (1618?-1678), has a _Landscape_ (No. 2346). Although Isack van Ostade at times gave himself up to trivial subjects, as we have already seen, the merit of his frozen river scenes (Nos. 2510, 2511, 2515) is firmly established, and the happy way in which he combined a genuine appreciation of nature with great skill in the placing and treatment of his figures has earned for him a high place among the Dutch landscape painters. AELBERT CUYP Unlike most of the artists of his time in Holland, Aelbert Cuyp (1620-1691) was highly esteemed by his contemporaries, his social position and his good fortune in money matters freeing him from the poverty which Hobbema and others endured. He painted portraits with much skill, as we see from his _Portrait of a Man_ (No. 2345A) and his _Portrait of a Boy and a Girl with a Goat_ (No. 2344); but he is best known as a cattle painter, his sturdy cattle being artistically grouped in thick green pastures flooded with sunshine, as in his _Herdsman with Cattle_ (No. 2341). He attained much success also with his riding pictures, and the _Starting for the Ride_ (No. 2342) and the _Riding Party_ (No. 2343) are in every way preferable to his _Boats on a Rough Sea_ (No. 2345). Following his usual habit, he has placed no date on any of these six pictures. He had no pupil in the proper sense of the term; but a host of imitators, such as Jacob van Stry and the much later English Royal Academician Sidney Cooper, failed ignominiously in their feeble attempts to copy his methods. Jan Wynants was another landscape painter in the Haarlem School, although he settled in Amsterdam and died there in 1682. His _Outskirts of a Forest_ (No. 2636) is signed and dated 1668, and is superior to the _Landscape_ (No. 2637) which bears his own signature as well as that of Adriaen van de Velde, who on numerous occasions inserted the figures for him. Wynants has also placed his name on a small _Landscape with Sportsman and Falconer_ (No. 2638). Adriaen van de Velde has been careful to sign and date each of the seven pictures by which he is represented (Nos. 2593-2599). By Allart van Everdingen (1621-1675), who travelled in Norway and painted rocky scenes and waterfalls, we find two _Landscapes_ (Nos. 2365 and 2366). JACOB VAN RUISDAEL