a district of Scotland, in the north of Perthshire, comprising an area of about 450 square miles. It is bounded on the N., the N.W., and W. by Badenoch and Lochaber in Inverness-shire, on the S. by Breadalbane and Strathmore, E. by Forfarshire, and N.E. by Mar in Aberdeenshire. This district is rough and mountainous, interspersed with woods and valleys, but withal beautiful and romantic. In Blair, amidst a wilderness of old trees, stands Blair Castle, the principal seat of the Duke of Athol. In the same neighbourhood is situated the pass of Killiecrankie, memorable as being the scene of action between the troops of William III. under General McKay, and the Highland adherents of James II. under the celebrated Viscount Dundee. Glentilt, in this district, has lately acquired notoriety from the attempts made to deprive the public of the right of way.