Note 15 — II. STRABO, MELA, PLINY, PTOLEMY.
Reading edition
It is suggested (Notes on Richard of Cirencester) that beginning with the Novantum Chersonesis (Mull of Galloway?), in E. long. (Ferro?) 21°, the latitudes were mistaken for the longitudes, hence Cape Orcas (Duncansby Head?) was thrown to the east, E. long. (Ferro?) 31° 20´.