' The Tummel fames from the north-eastern end of Loch Lydoch, a Urge sheet of water on the border of Argyleahire, and flows eastward about six miles into Loch Rannoch, passing in its way through one or twu smaller lochs. Loch Rannoch is • long narrow sheet of water, ex tending nine miles from west to east, and rarely if ever exceeding a mile in breadth. It abounds with trent of the largest size. Two streams, one flowing into the 'Pummel, between Lochs Lydoch and Remit:mit, and thb other Into Loch Rannoch itself, serve to convey to the Tummel the supereuens waters of Loch Ericht, another long narrow sheet of water, extending in length 14 miles from north to south by one mile in breadth, partly in Inverness-shire and partly in Perthshire. From the eastern extremity of Loch Rannoch, the Tummel flows eastward 10 miles into Loch Tummel, and thence 12 miles farther east and south into the Tay. Its whole course is nearly 40 miles. Between Lech Tummel and the Tay it receives on its left bank the Garry, which has a course of about 30 miles, flews through Lech Garry, a narrow lake 3 miles long, and receives on its left bank the streams which water Glen Bruer and Glen Tilt, and on its right bank the Feachorie, which waters Glen Erocbkie.
The Breen or Brand, 20 miles long, waters Strath Breen, and serves as an outlet to Lochs Freuchie, Kennard, Skiach, and some others, all small. The Isla, one of the most important feeders of the Tay, belongs chiefly to Forfarshire ; only about 14 miles of its course are upon or within the border of Perthshire. Of its tributaries, the Shee or Ericht, belonging to Perthshire, is nearly 30 miles long, and waters Glen Shee ; it receives the Airdle, 20 miles long, which rises at the foot of Cairn Gower, in the Ben y Glee Mountains, and *eters Strath Airdle. The Almond rises not far from the south-east shore of Loch Tay, and flows about 24 miles east into the Tay.
The district of 31enteith in the south belongs to the basin of the Forth, and is watered by the Teith, which rises' just within Argyle shire, and flows 4 or 5 miles into Loch Katrina, a winding and pic turesque sheet of water, 8 miles long from west-north-west to east south-east, which has become celebrated as the scene of the 'Lady of the Lake.' From the south-east corner of Loch Katrina the Teith flows 9 miles throngh the Trosachs, and at the foot of Ben Veuu it passes through the small lochs Acbray nod Venacher to Callender, where it is joined by a stream from Loch Voil and loch Luhnaig, which lie north and north-east of Loch Katrine, and are each about 5 miles long. From Callender the Teith flows south-east 12 miles into the Forth above Stirliug ; its whole length is about 34 miles. The Allan, a small feeder of the Forth, waters Strathallan on the north-western and western side of the °chills; the Devon, auothtr small feeder, waters the valley on the south-eastern side of the same hills ; and the Forth flows just within the southern boundary of the county. [FORTH ; ARD, Lem.) The Falloch is near the south western border of the county. [DustnAneoNslitne.] There are several
falls in the rivers of Perthshire. Those of the Bruer and the Tummel are very picturesque ; as are also the falls and rapids of the Devon, called the De'il's Mill, the Rumbling Bridge, end the Cauldron Lim].
The read from Edinburgh by Queeusferry and Dunfermline to Perth enters the county a few miles S. from Perth. Roads from Dundee, St. Andrews, and from Glasgow, by Stirling, converge at Perth. From Perth there is a road by Forfar, Brechin, and Stouehaven to Aberdeen; another road follows the valley of the Tny by Dunkeld, and afterwards the valleys of the Tummel and the Garry, through the Pass of Killie cmnkie, to Fort Augustus, Inverness, and the Northern Highlands ; while a third follows the valley of the Tay and the Dochart into Argyleshire. Three roads lead from Stirling into the Western High lands through blenteith ; one through Aberfoylo to the hanks of Loch Lomond ; another to Olengyle at the head of Loch Cateran; and another, branching from this, joins the road through the valley of the Tay into Argyleabire.
The town of Perth communicates with the south by the Scottish Central railway, which joins the Caledonian railway, and thence by the Lancaster and Carlisle and Midland lines to Loudon. The portion between Perth and Dunblane, 23 miles, belongs to this county. By the Scottish Midland Junction railway and the Dundee and Perth line, both of which run through a portion of the south-eastern corner of the county, Perth has easy communication northward with Aberdeen and the intermediate towns, and eastward with Dundee and the other towns on the sea-coast.
Geology, &c.—The north-western and northern parts of the county belong to the great primitive district of the north of Scotland. Granite is found underlying the peat of the extensive waste of Rannoch Moor in tho west portion of the county ; but the predomi nant rock in this district is mica-slate, skirted by clay-slate and chlorite slate, both of which pass insensibly into mica-slate. Schihallien, Ben Lowers, the hills round Loch Tay, and many of the mountains iu the Grampian range, are composed of mica-slate, intermixed with horn blende-slate and quartz-rock, and in some parts with a small portion of crystalline limestone. Chlorite-slate, clay-slete, end others of similar cha racter are found in the south-western part of the county. East of Loch Lubnaig, true mica-slate occurs and occupies the whole district, as far as Perth. A highly-elevated range of breccia may be traced in various places, separating the primitive district from the secondary district in the south-east of the county. The district to the south and cast of the breccia is occupied by beds of sandstone. Basaltic rocks may be traced in a north-east direction. The Ochill Hills in the south-east consist chiefly of porphyry and amygdaloid; and the Hill of Kilauea', near Perth, is an amygdaloid containing numerous nodules of agate and carnelian. Some portions of the county near the south-east are comprehended in the coal-field of Fifeshire.