These guide-books will deal more particularly with the Great Towns where objects of art and antiquity are numerous. In every one of them, the general plan pursued will be somewhat as follows. First will come the inquiry why a town ever gathered together at all at that particular spot—what induced the aggregation of human beings rather there than elsewhere. Next, we shall consider why that town grew to social or political importance and what were the stages by which it assumed its present shape. Thirdly, we shall ask why it gave rise to that higher form of handicraft which we know as Art, and towards what particular arts it especially gravitated. After that, we shall take in detail the various strata of its growth or development, examining the buildings and works of art which they contain in historical order, and, as far as possible, tracing the causes which led to their evolution. In particular, we shall lay stress upon the origin and meaning of each structure as an organic whole, and upon the allusions or symbols which its fabric embodies. A single instance will show the method upon which I intend to proceed better than any amount of general description. A church, as a rule, is built over the body or relics of a particular saint, in whose special honour it was originally erected. That saint was usually one of great local importance at the moment of its erection, or was peculiarly implored against plague, foreign enemies, or some other pressing and dreaded misfortune. In dealing with such a church, then, I endeavour to show what were the circumstances which led to its erection, and what memorials of these circumstances it still retains. In other cases it may derive its origin from some special monastic body—Benedictine, Dominican, Franciscan—and may therefore be full of the peculiar symbolism and historical allusion of the order who founded it. Wherever I have to deal with such a church, I try as far as possible to exhibit the effect which its origin had upon its architecture and decoration; to trace the image of the patron saint in sculpture or stained glass throughout the fabric; and to set forth the connection of the whole design with time and place, with order and purpose. In short, instead of looking upon monuments of the sort mainly as the product of this or that architect, I look upon them rather as material embodiments of the spirit of the age—crystallizations, as it were, in stone and bronze, in form and colour, of great popular enthusiasms.