Dr. Stukeley has accurately distinguished two kinds of shrines, both equally made for receiving the reliques of saints: but with this difference, that one sort was portable, and used in processions; and the other fixed, as being built of stone, marble, and other heavy materials. The former of these were called Feretra, under which word Du Fresne says: “Feretra reliquias sanctorum continentia cum processionibus circumlata non semel legere “est.” And although this sort could only with propriety bear that name, yet was it also given to the immoveable fixed shrines; as to our protomartyr's at St. Alban's, Thomas Becket's at Canterbury, Birinus's at Dorchester, Cuthbert's at Durham, and Edward the Confessor's at Westminster.