Note 13 — Chapter XLIII
Reading edition
Or rather to the resurrection of an ancient theme long lost, for as Dr. Sigerson has shown, one of the Monks of St. Gall had already treated it in Latin nine hundred years before. See Constantine Nigra's "Reliquiæ Celticæ," and Dr. Sigerson's "Bards of the Gael and Gall," p. 413.