dashes impetuously through a narrow glen, and there a placid lake glistens like polished silver. Huge masses of rock arise in a thousand fantastic forms on one side, while on the other vast desert tracts, monotonously level, spread out as far as the eye can reach.
The general aspect of the country is utterly unlike that of any modern land, and we gaze on the savage panorama before us with mingled feelings of admiration and awe. We are surrounded by wonders. The vegetation which fringes the banks of the river is strangely unfamiliar. Some of the trees remind us of the palms and arborescent ferns of the Tropics, and others seem to be allied to the cypress and juniper, but they all belong to unknown species.
The air, which is hot and oppressive, swarms with insects; curious flies and beetles hum around us, and every now and then a huge dragon-fly darts past like a meteor.
Looking towards the river, other more striking forms of animal life meet our gaze. Hundreds of gigantic crocodiles are swimming in the stream and lying on the muddy shore; horrible creatures are they, with their thick coats of mail and sharp elongated muzzles, and we cannot watch their ungainly movements without experiencing an involuntary sensation of disgust.
On the oozy banks of the river another type of reptilian life is represented by a shoal of fresh-
