With regard to the distinctions of schools or local centres within the same country, the evidence of probable origin has to be corroborated by historic fact. It is not safe without further proof than that afforded by general features to affirm that this or that MS. was executed at Paris, Dijon, Amiens, or Limoges in France; or at Ghent, Bruges, or elsewhere in Flanders; or whether a MS. be Rhenish or Saxon, Bavarian or Westphalian, in Germany; Bolognese, Florentine, Siennese, Milanese, or Neapolitan in Italy; or executed at Westminster, St. Albans, Exeter, or elsewhere in England. Nevertheless the special characteristics of all these schools are quite distinguishable. In the attempt to distinguish them, although the diagnosis may be perfectly accurate, the actual facts may be otherwise accounted for. Hence the danger to which even the experienced connoisseur is liable. For example, certain MSS. are written in a fine Bolognese hand, which it is proved were actually executed in Flanders; others that one would feel sure were Netherlandish, were illuminated in Spain. Some very fine typical Flemish miniatures were painted in Italy; certain Florentine miniatures were the work of artists residing in Rome. Milanese illumination is quite distinguishable from Neapolitan, and Venetian from both, yet the school is not proof of the _provenance_. Illuminators, like other craftsmen, travelled from city to city, and princes employed men, who resided in their patrons' palaces, who yet had learned their art many leagues away. How often we find the names of artists with the words Dallemagna, il Tedesco, le Poitevin, Veronese, Franco, Crovata, etc., employed in Italian houses, indicating the place of their nativity. So that even when we know every feature of the work we have much to learn ere we can say with truth that it was executed in such and such a city. We must take into account details which are liable to escape the ordinary observer, such as quality of vellum or paper, choice of pigments, mode of application, and other particulars quite distinct from style of ornament or varieties of form in foliage. In the Fitzwilliam Library at Cambridge is an Italian MS., the characteristics of whose ornamentation are unequivocally French, but whose mode of treatment shows not only that it is Italian but that it is Milanese, but whether executed in Milan or not is more than anyone can affirm. In the British Museum is a magnificent service-book called the Padua Missal, but the probability is that the Paduan artist who painted its splendid pages, painted them at Venice. That it was executed for Sta. Justina, at Padua, is no proof that the work was done in that city.