Not the least interesting feature in Mr. C. C. J. Webb's new edition of John of Salisbury's Policraticus are the references to the passages of Roman literature from which his author has quoted or borrowed. One cannot speak too highly of the thoroughness with which the editor has carried out this part of his task; that a few cases of borrowing should have passed unnoticed, and the sources of a few quotations evaded his inquiries, was inevitable.