_National Debts_ (Vol. iii., p. 374.).--A description of the foundation of a "national debt" in Florence in the years 1344-45 is to be found in the _Florentine History_, by Henry Edward Napier, R. N. (published by Edward Moxon, Dover Street), chap. xxi. p. 125. FIRENEYE. _Law Courts at St. Alban's_ (Vol. i., p. 366.).--I beg to send a copy of a Latin inscription discovered some years since over the west door inside the great nave of St. Alban's Abbey. It may possibly prove to be a record of some historical value, and at all events furnishes a partial reply to the Query of Σ. in your First Volume:-- "Propter vicinii situm, et amplum hujus Templi spatium ad magnam confluentium multitudinem excipiendam opportunum, temporibus R. H. VIII. et denuo R. Elizabethæ, peste Londini sæviente, Conventus Juridicus hic agebatur." Underneath this is written,-- "Princeps Dei Imago Lex Principis opus Finis Legis Justitiâ." Can any of your learned correspondents clear up the nature and extent of these fear-stricken flights to the old abbey? Was it the Commons, or Westminster Hall, or the Convocation, or all together, avoiding the plague? I may observe that our ancestors seem to have put to some _practical_ use the vast space of an abbey-church on extraordinary occasions; and I would humbly suggest that we too of the nineteenth century might take the hint, and employ the many unoccupied naves of our ecclesiastical buildings for _religious_ purposes on ordinary occasions. W. M. K. _The Fifteen O's_ (Vol. iii., p. 391.).--They are sometimes called _St. Bridget's Prayers_. I have a very small volume entitled: "¶ A breefe Directory and playne way how to say the Rosary of our blessed Lady: with Meditations for such as are not exercised therein. Whereunto are adioyned the prayers of S. Bryget with others. Bruges Flandrorum, excudebat Hu. Holost. 1576." At the end (beginning with fresh signature A i.) are-- "¶ Fifteene Prayers, righte good and vertuous, vsually called the XV Oos, and of diuers called S. Briget's prayers, because the holye and blessed Virgin vsed dayly to say them before the Image of the Crucifix in S. Paules Church in Rome."