_Page 88._ The best book on the Hohenstaufen is Von Räumer, _Geschichte der Hohenstaufen_, a very fine and interesting work. Frederick loved more than Arab art, unless history is unjust. Amari speaks of him and his grandfather, King Roger, as "i due Sultani battezzati di Sicilia." _Page 97._ Upon the vexed question where Palæopolis stood, or if it stood anywhere at all, Beloch seems a little wilful, arguing stoutly that there never was such a city. "But," says Mr. Hodgkin, "in the face of Livy's clear statement (viii. 22) as to the situation of the two cities, and the record in the Triumphal Fasti of the victory of Publilius over the 'Samnites Palæopolitanei,' this seems too bold a stroke of historical scepticism" (_Italy and Her Invaders_, vol. iv. p. 53). _Page 108 et seq._ See Camillo Porzio, _La Congiura de' Baroni_. _Page 121._ Upon the churches of Naples there are two works which surpass all others--namely, _Documenti per la storia, le arti e le industrie_, by Prince Gaetano Filangieri, a monument of vast learning; and _Denkmaeler der Kunst des Mittelalters in Unter Italien_, by H. W. Schulz, whose work forms the basis of almost every guide-book published on southern Italy. _Page 123._ This tale of the graceless Duke of Calabria is in Giannone, _Storia di Napoli_, lib. xxii. _ad init._ _Page 126._ Those who desire more information on the everyday life of Naples will do well to seek it in Kellner's work, _Alltägliches aus Neapel_, the tenth volume of the well-known series, "Kennst du das Land," which is sold everywhere in Italy. _Page 137._ The account of this storm is in book v. epist. 5, of Petrarch's letters. The storm may, or may not, be the one which destroyed Amalfi. I know of no evidence pointing either way, save the improbability that two tempests should have wrought such devastation. _Page 140._ Fucini's work is called _Napoli a Occhio Nudo_. _Page 141._ Any history of Naples will give the facts of the struggle between Frederick the Second and Innocent. See especially von Räumer or Giannone. _Page 143._ La Colonna della Vicaria. Signor Amalfi quotes from Voltero, _Dizionario filosofico_, _s.v._ "Banqueroute," the following passage:--"Le négociant _fallito_ pouvait dans certaines villes d'Italie garder tous ses biens et frustrer ses créanciers, pourvu qu'il s'assit le derrière nu sur une pierre en présence de tous les marchands. C'était une dérivation douce de l'ancien proverbe romain, _Solvere aut in aere, aut in cute_, payer de son argent ou de sa peau" (_Tradizioni ed usi_, p. 123).