The donors of the windows, on the other hand, shine there amid a blaze of heraldic glory. You may still behold Louis de Poissy on his white charger and at the head of his men, clad in full armour, setting forth on the Crusade. Ferdinand III. of Castile also, S. Ferdinand, you may see, wrapped in mail for the defence of the faith, and Blanche of Castile, who so often brought her young son to Chartres and inspired him with his so tender devotion to Notre-Dame. Pierre Mauclerc is here, that turbulent spirit who expiated his offences against order by his immense generosity to the Cathedral; Thibault VI., Count of Chartres, the very valiant Crusader; Amaury de Montfort, Constable of France; Pierre de Courtenay; Bouchard de Marly, of the noble house of Montmorency--these and a whole gallery of other counts and barons and knights of chivalry live on in the church which they endowed with their gold and for which they fought with their swords. But we have seen that this Cathedral was built not by the generosity of the great alone. It was in every sense a popular, a national monument, raised to the glory of God by the contributions and labour of all classes. And if the humble donors have scarcely dared, like the great lords, to represent themselves individually, they have fortunately not shrunk from perpetuating, under the guise of the guilds through which they subscribed, the record of their no less interesting personalities. They all figure in the windows founded by their several trades; masons and skinners, drapers and goldsmiths, bakers and armourers, butchers and tanners, cobblers and water-carriers even, are all portrayed at work with the simple realism of the Middle Ages. A whole book, and a very interesting one, might be written as a commentary on the thirty or forty trade corporations here depicted. It would exhibit the commercial history of a mediæval shrine, the mart of pilgrims and the _bazar_ of the devout. All the trading corporations of the Middle Ages were close and exclusive bodies. Admission to them was only possible by the long and narrow path of apprenticeship. Economically, their general aim was to limit competition by limiting the number of masters, by limiting the number of embryo masters in the shape of apprentices whom each master in a guild might receive. Their general result was to maintain a high standard in the quality of the work produced, and by discouraging the modern ideal of quantity to provide a certain and sufficient employment amongst all those who were fortunate enough to be within the sacred circle of their union.