Pulpit in Church of S. Cesareo in Palatio, Rome. Mediæval Sculpture inlaid in Mosaic " 408 Candelabrum in S. Paolo at Rome " 412 BOOK I ROMANO-LOMBARD ARCHITECTS THE CATHEDRAL BUILDERS CHAPTER I THE GUILD OF THE COMACINE MASTERS In looking back to the great church-building era, _i.e._ to the centuries between 1100 and 1500, do not the questions arise in one's mind, "How did all these great and noble buildings spring up simultaneously in all countries and all climates?" and "How comes it that in all cases they were similar to each other at similar times?" In the twelfth century, when the Italian buildings, such as the churches at Verona, Bergamo, Como, etc., were built with round arches, the German Domkirchen at Bonn, Mayence, Treves, Lubeck, Freiburg, etc.; the French churches at Aix, Tournus, Caen, Dijon, etc.; and the English cathedrals at Canterbury, Bristol, Chichester, St. Bartholomew's in London--in fact, all those built at the same time--were not only round-arched, but had an almost identical style, and that style was Lombard. In the thirteenth century, when pointed arches mingled with the round in Italy, the same mixture is found contemporaneously in all the other countries. Again in the fourteenth century, when Cologne, Strasburg, and Magdeburg cathedrals were built in pure Gothic; then those of Westminster, York, Salisbury, etc., arose in England; the Domes of Milan, Assisi, and Florence in Italy; and the churches of Beauvais, Laon, and Rouen in France. These all came, almost simultaneously, like sister buildings with one _impronto_ on them all. Is it likely that many single architects in different countries would have had the same ideas at the same time? Could any single architect, indeed, have designed every detail of even one of those marvellous complex buildings? or have executed or modelled one-tenth of the wealth of sculpture lavished on one of those glorious cathedrals? I think not. The existence of one of these churches argues a plurality of workers under one governing influence; the existence of them all argues a huge universal brotherhood of architects and sculptors with different branches in each country, and the same aims, technique, knowledge and principles permeating through all, while each conforms in detail to local influences and national taste. If we once realize that such a Guild must have existed, and that under the united hands of the grand brotherhood, the great age of church-building was endowed with monuments which have been the glory of all ages, then much that has been obscure in Art History becomes clear; and what was before a marvel is now shown to be a natural result.