In exactly the same manner, he who would understand mediæval London must walk about modern London, but after _he has read his historian and his antiquary_, not before. Then he will be astonished to find how much is left, in spite of fires, reconstructions and demolitions, to illustrate the past. Here a quaint little square, accessible only to foot-passengers, shut in, surrounded by merchants' offices, still preserves its ancient form of a court in a suppressed monastery. Since the church is close by, one ought to be able to assign the court to its proper purpose. The hall, the chapter-house, the kitchens and buttery, the abbot's residence, may have been built around this court. Again, another little square set with trees, like a Place in Toulon or Marseilles, shows the former court of a royal palace. And here a venerable name survives telling what once stood on the site; here a dingy little church-yard marks the former position of a church as ancient as any in the City. London is full of such survivals, which are known only to one who prowls about its streets, note-book in hand, remembering what he has read. Not one of them can be got from the book antiquary, or from the guide-book. As one after the other is recovered the ancient city grows not only more vivid, but more picturesque and more splendid. London a city of low mean tenements? Dr. Brewer--Dr. Brewer! Why, I see great palaces along the river-bank between the quays and ports and warehouses. In the narrow lanes that rise steeply from the river I see other houses fair and stately, each with its gate-way, its square court, and its noble hall, high roofed, with its oriel-windows and its lantern. Beyond these narrow lanes, north of Watling Street and Budge Row, more of those houses--and still more, till we reach the northern part where the houses are nearly all small, because here the meaner sort and those who carry on the least desirable trades have those dwellings. [Illustration: CHURCH OF ST. PAUL'S, BEFORE THE FIRE]