The ecclesiastical architecture of Ireland, anterior to the Anglo-Norman invasion; comprising an essay on the origin and uses of the round towers of Ireland, which obtained the gold medal and prize of the Royal Irish Academy (1845)
Petrie, George, 1789-1866 · Dublin : Hodges and Smith · leaf 327
the single shafts of the nave, and the second, those of the double shaftson the piers of the chancel arch.
Church architecture · Round towers
Internet Archive · California Digital Library · Public Domain Mark 1.0. Free to use for anything.
