When I entered I could not refrain from an exclamation of delight, nor can I forbear to describe the place in some detail. To begin with it was almost round and very large, the ceiling being domed and the books being carried in long narrow stacks sunk into the paneling between the French windows as high as the carved molding. Above this an exquisite tone of blue with a few cleverly distributed stars gave a sense of infinite space, and despite the cumbersome old Florentine furniture the room was neither heavy nor dull. There was just enough gold to furnish flashes of light, and the warm old amber brocade on the chairs seemed to catch and hold the sunlight which poured through the long narrow windows at the west, all of which opened directly upon the first terrace of the rose garden. But the real triumph in lighting was the rose window of plain leaded glass on the north side of the room--the wall of which had been reconstructed to accommodate it in order that the Madonna might be properly illuminated by day. We gasped our admiration of its perfect lacery, and then turned about and faced the picture itself in reverent silence. Of course it is ridiculous to suppose there is anyone to whom the Madonna of the Lamp is not perfectly familiar, being, as she is, one of those paintings which are impressed upon the popular mind in spite of itself through endless repetition upon postal and Christmas cards, engravers' windows, magazine covers and Sunday-school prizes, to say nothing of Little Collections of Great Masters, gift photographs, furnishings for college rooms and appeals for public charities. Nevertheless, I will describe it, because as my dear father used to say, the collective mind of the public is not the public mind of the collector. It has to be told, in other words, when it can't be shown; whereas, of course, you can tell a collector nothing--and get him to admit it. Well, at any rate, in case you do not recall it, the Madonna of the Lamp is a round canvas, not more than two and a half feet in diameter, and represents the Virgin with the Child curled up in a robe of sapphire blue which falls from her head in thick sweeping folds and crosses her knee in such a way as to give the appearance of being blown from behind by a wind and aiding in the circular effect. She is seated and bending over the Infant, protecting both him and the flickering lamp from the wind. Above her head is a single star visible through a patch of leaded window. Now you recall it, I am sure. It was painted in Florence by Raphael about the year 1506 and is one of the most famous monuments to his genius.