Many other subjects for similar comparative treatment may be found in the Louvre. Pick out for yourself a special theme, such as, for example, the Adoration of the Magi, the Nativity, the Presentation in the Temple, or the Agony in the Garden, and try to follow it out through various examples. Choose also a saint or two, and pursue them steadily through their evolution. Do not think that to examine paintings in this way is to be absorbed by the subject rather than by the art of the painter. Only superficial observers fall into this error. You will find on the contrary that the characteristics of each School and of each artist can best be discovered and observed by watching how each modifies or alters pre-existing and conventional conceptions. In order to thoroughly understand any early picture, you must look at it first as a representation of such-and-such =a given subject=, for which a relatively fixed and conventional set of figures or accessories was prescribed by tradition. The number and minuteness of the prescribed accessories will grow upon you as you watch them. You have then to observe how =each School as a whole= treats such works; what feeling it introduces, towards what sort of modification in style or tone it usually tends. Next, you must consider it relatively to =its age=, as exemplifying a particular stage in the progress of the science and art of painting. Last of all you must carefully estimate what peculiarities are due to the taste, the temperament, the hand, and the technique of the =individual artist=. For example, Gerard David’s Marriage at Cana is thoroughly Flemish in all its details; while Paolo Veronese’s is thoroughly Venetian. You may notice the Flemish and Venetian hand, not merely in the figures and the composition as a whole, but even in the extraordinarily divergent treatment of such details as the jars in the foreground, which for David are painted with Flemish daintiness of detail, though coarse and rough in themselves; while Veronese approaches them with Venetian wealth of Renaissance fancy, both in decoration and handling. But the David, again, is not merely Flemish: it has the distinctive marks of that particular Fleming, and should be compared with his lovely portrait of a kneeling donor with his three patron saints in the National Gallery: while the Veronese is noticeable for the voluptuousness, the over-richness, the dash and spirit, of that large free master of the full Renaissance, the Rubens by comparison among the Venetians of his time. So too, if you study attentively the Botticellis in the Salle des Primitifs, you can notice a close similarity of type in many of his faces with the types in certain pictures by Filippo Lippi and still more in those by other Florentines of the same period; while you are yet even more distinctly struck by the intense individuality and refined spiritual feeling of this very original and soulful master.