side, and three lintelled windows in the east end (Fig. 1160). Mr. Mackenzie shows reasons for believing that this gable has been reconstructed, and that it originally had only two windows in the lower part, with perhaps some kind of central window at a higher level, something like what is found at Mortlach. The pointed piscina (Fig. 1161) beneath the eastmost south window (see Fig. 1160) has, as usual, been mutilated.
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Fig. 1158.—The Collegiate Church of Arbuthnott. View from South-West.
To connect the chancel with the Arbuthnott Aisle a round archway (see Fig. 1160), 7 feet 8 inches wide, has been cut through the chancel wall. The details of this arch are shown in Fig. 1162. This chapel or aisle, which has an apsidal south end, measures about 20 feet 3 inches long by 12 feet 11 inches wide, and has a vaulted stone roof (Fig. 1163) about 18 feet high, with a semi-octagonal dome over the apse. This
