Very different is the description which may be given of Lake Gökcheh (the blue) or Sevan--the Lychnitis of Ptolemy, the lake of Gegham or of Geghark in Armenian literature. It is situated at a level of 6340 feet, and is therefore the most elevated, if also the smallest, of the three great sheets of water upon the surface of the tableland. It lies at a distance of about 130 miles north of the northern shore of Lake Urmi, and close to the barrier of the mountains of the northern peripheral region. Its waters are sweet and support delicious salmon trout; they are said to attain a depth of 360 feet, or, according to another observer, of 425 feet. [29] Gökcheh is in fact essentially an Alpine lake, lying restfully in the lap of a circle of mountains of which those on the southern shore are of eruptive volcanic origin. It has an outlet on the west to the river Zanga, and a portion of its waters find their way through this channel to the Araxes. The balance of opinion inclines to the view that this connection is of artificial origin; and when the lake is low, especially in autumn, the stream will be almost dry. [30] But both Urmi and Gökcheh sink into obscurity when compared to the lake of Van. Almost as large as the one and perhaps deeper than the other, it at once combines some of the characteristics of either basin and adds others essentially its own. Like Urmi its waters are heavily charged, though with soda rather than with salt. Its great elevation and its juxtaposition to the mountains of the peripheral region recall corresponding features in Gökcheh. But like a book which may borrow much from the work of other writers, and yet produce an effect on the reader which is wholly new, so one opens the landscape of Lake Van with that particular emotion which only very beautiful and original objects can produce. With the wondrous pieces of natural architecture about the margins of this inland sea my reader will become perfectly familiar as this work proceeds. My present object is to fly very low to the ground, and to notice such facts as appeal to the mind rather than to the eye. The extreme length of the lake would seem to measure 78 miles, and the breadth from north to south of the principal body about 32 miles. To all appearance it is very deep except at the north-east and south-west extremities; but no systematic soundings have been taken to my knowledge, though it would be extremely interesting to know whether indications can be traced of the Arjish arm having once composed a separate unit. The principal streams enter the easterly portion of the basin; they are the Erishat or Irshat near Akantz, the Bendimahi Chai, the Marmed and the Khoshab. Several little rivers are collected in the delta below the old Akhlat, and quite a nice stream cascades into the lake at the neighbouring village of Karmuch, which probably collects a portion of the drainage of the plain between Nimrud and Lake Nazik. No issue of the sea has yet been discovered.