At the Reformation this chapel was used as a preaching station by a reader under the minister of Roseneath, but when the site of Cardross Church was altered so as to bring it into its present more convenient position as regards this locality, the chapel fell into disuse. The burying-ground attached to it, however, continued in use for interments till recent years. In 1640 a portion of the chapel was turned into a school, in terms of an agreement between Robert Napier of Kilmahew and the other heritors. Under this agreement Kilmahew bound himself--first, “to give the use of his chapel of Kilmahew bewest the quir thereof, for and in place of a school; second, to mortify to the schoolmaster annually five [Illustration: FIG. 1361.--Chapel at the Kirkton of Kilmahew. Plan.] bolls one firlot of tiend bear, and also a house and a piece of land layand thereto beside the chapel of Kilmahew, extending to about an acre or therby, together with ane piece of land for pasture, which was of old possest by the priest of Kilmahew, by order of the said Robert Napier of Kilmahew his predecessors in time of superstition and popery; and in case the annual value of these provisions should fall short of eighty merks to make it up to that sum; third, to entertain the school master present and to come, in meat, drink, and bedding, in household with himself within the house of Kilmahew, so long as he shall discharge the duty of family exercise and prayer within the said family.”[170] The acre of ground above referred to is now in the possession of the School Board, together with two acres excambed in 1795 for the priest’s right of pasturing a cow on Kirkton farm. The building is now unoccupied, but it is kept in good repair. It consists (Fig. 1361) of an eastern portion or choir, which is roofed, and of a western portion or nave, which is roofless. The former is ancient, but the latter appears to be comparatively modern. The choir is, internally, 13 feet 6 inches in length from west to east, by 16 feet 3 inches in width from north to south, and the walls are 3 feet in thickness. In the west wall there is a rounded and chamfered arch 9 feet 2 inches in width, now built up. The choir has two windows, one in the north [Illustration: FIG. 1362.--Chapel at the Kirkton of Kilmahew. View from South-East.]