Summing up the industrial evolution, we note that about 1340 there were 200 cloth factories in Florence; and a century later 272, of which 83 made silk and cloth-of-gold. At the latter period there were 72 bankers or money-changers, 66 apothecary shops, 30 goldbeaters, and 44 of goldsmiths, silversmiths, and jewellers. The artisan population was estimated at 30,000; and gold currency at two millions of florins (Pignotti, iii, 290-91). Concerning Milan, it is recorded that in 1288, a generation after it had lost its liberties, it had a population of 200,000 (certainly an exaggeration), 13,000 houses, 600 notaries, 200 physicians, 80 schoolmasters, and 50 copyists of MSS. (Hallam, _Middle Ages_, i, 393, citing Galvaneus Flamma; cp. Ranke, _Latin and Teutonic Nations_, Eng. tr. p. 111.) § 3 We can now generalise, then, the conditions of the rise of the arts and sciences in medieval Italy. First we have seen commerce, handicraft, and architecture flourish in the new free cities, as they did at the same time in Genoa, Pisa, and Venice. In the south, again, in the Two Sicilies, under the reign of Frederick II, prosperous industry and commerce, in contact and rivalry with those of the Saracens, supplied a similar basis, though without yielding such remarkable fruits. There, however, on the stimulus of Saracen literature, occur the decided beginnings of a new literature, in a speech at once vernacular and courtly, as being accepted by the emperor and the aristocracy. The same conditions, indeed, had existed before Frederick, under the later Norman kings; and it is in Sicily about 1190 that we must date the oldest known verses in an Italian dialect.[568] Some of them refer to Saladin; and the connection between Italian and Arab literature goes deeper than that detail; for there is reason to suppose that in Europe the very use of rhyme, arising as it thus did in the sphere of Saracen culture-contact, derives from Saracen models.[569] In any case, the Moorish poetry certainly influenced the beginnings of the Italian and Spanish. About the same time, however, there occurs the important literary influence of the troubadours, radiating from Provence, where, again, the special source of fertilisation was the culture of the Moors.[570] The Provençal speech, developed in a more stable life,[571] took literary form before the Italian, and yielded a literature which was the most effective stimulus to that of Italy. And, broadly speaking, the troubadours stood socially for either the leisured upper class or a class which entertained and was supported by it.