These plateaus, with an average elevation of Boo to 1000 ft., are mostly covered with forests of oak, beech and lime, and are deeply cut by river valleys, some being narrow and craggy, and others broad, with gentle slopes and marshy bottoms. Narrow ravines intersect them in all directions, and they often assume, especially in the east, the character of wild, impassable, woody and marshy tracts.
Is as yet hardly trenched by the Rio Grande, which escapes through an impassable canyon south-, ward on its way to the Gulf of Mexico.
Each class of road was named after the authority responsible for its construction and upkeep. In some of the remoter rural districts there are only bridle-paths, or rough tracks, which become almost impassable in wet seasons, and are never suitable for vehicles less solid than the Portuguese ox-carts.
The roads are rough and at times almost impassable, 'however, and the river crossings difficult and dangerous.
On the whole, setting aside the impassable barrier between Greek and Phoenician, other distinctions of race within the island were breaking down through the spread of the Hellenic element, but among the Greek cities themselves the distinction between the Dorian and the Ionian or Chalcidian settlements was still keenly felt.
Linnaeus's primarily zoological classification of man did not, however, suit the philosophical opinion of the time, which responded more readily to the systems represented by Buffon, and later by Cuvier, in which the human mind and soul formed an impassable wall of partition between him and other mammalia, so that the definition of man's position in the animal world was treated as not belonging to zoology, but to metaphysics and theology.
These conditions subsist with but few modifications, if any, from the Straits northward to the 42nd parallel, the extreme humidity, abnormal rainfall and dark skies being unfavourable to the development of insect life, while the Andes interpose an impassable barrier to migration from the countries of the eastern coast.
To every type of coast there may be related a special type of occupation and even of character; the deep and gloomy fjord, backed by almost impassable mountains, bred bold mariners whose only outlet for enterprise was seawards towards other lands - the viks created the vikings.
Although a considerable stream in the rainy season, and often impassable, the bed is dry or nearly so during the rest of the year.
The larger rivers in the wet season form impassable morasses, especially in the S.E., where the mountains rise in isolated masses from flat plains.
The valley about Herat includes a flat alluvial plain which might, for some miles on any side except the north, be speedily reduced to an impassable swamp by means of flood-water from the surrounding canals.
On the south-west they lose themselves in the sandy desert of Registan, which wraps itself round the plain of Kandahar, and forms another impassable barrier.
The higher plateaus are called paramos, cold, windswept, mist-drenched deserts, lying between the elevations of 10,000 and 15,000 ft., which are often the only passes over the Cordilleras, and yet are almost impassable because of their morasses, heavy mists, and cold, piercing winds.
Above its normal level, and at this time forms an impassable barrier between the northern and central provinces.
A mountain range such as this, attaining altitudes at which vegetable life ceases, and the support of animal life is extremely difficult, constitutes an almost impassable barrier against the spread of all forms of living creatures.
Reason and thought, the essential quality of the soul, do not belong to the brutes; there is an impassable gulf fixed between man and the lower animals.
Of impassable mountain, and knowing well the danger of a " cordon " defensive, he met the crisis in another and a bolder fashion.
Here the streams that drain the higher areas descend to the plains through narrow canyons in the mountain border, impassable for ordinary roads and difficult of entrance even by railways; a well-known example is the gorge of Clear Creek east of the Georgetown mining district.
Principal Passes.-Though the Alps form a barrier they have never formed an impassable barrier, since, from the earliest days onwards, they have been traversed first, perhaps, for purposes of war or commerce, and later by pilgrims, students and tourists.
The Nile was falling, and Kitchener decided to keep the gunboats above the impassable rapid at Um Tuir, 4 m.
These narrow limits (called Wakhan) include the lofty spurs of the northern flank of the Hindu Kush, an impassable barrier at this point, where the glacial passes reach 19,000 ft.
The narrow straits in which the waterway connecting the Mediterranean with the Black Sea contracts, both to the north and to the south of the city, could be rendered impassable to hostile fleets approaching from either direction, while on the landward side the line of defence was so short that it could be strongly fortified, and held against large numbers by a comparatively small force.
The Trengganu river is obstructed by impassable rapids at a distance of about 30 m.
Snares of another type consisting of a tangled mass of threads amongst which the spiders pick their way with ease, but which are impassable to insects, are spun by members of the Theridiidae and Pholcidae; but by common consent the so-called orbicular web, so characteristic of the Argyopidae but by no means confined to them, is regarded as manifesting the greatest perfection of instinct in snare-spinning.
However, he soon realized the impossibility of treating the fathers of Basel as ordinary rebels, and tried a compromise; but as time went on, the fathers became more and more intractable, and between him and them gradually arose an impassable barrier.
For these reasons he marched by land; and as the roads north of the Tagus were deemed impassable for guns, while transport and supplies for a large force were also difficult to procure, he sent Sir John Hope, with the artillery, cavalry and reserve ammunition column, south of the river, through Badajoz to Almaraz, to move thence through Talavera, Madrid and the Escurial Pass, involving a considerable detour; while he himself with the infantry, marching by successive divisions, took the shorter roads north of the Tagus through Coimbra and Almeida, and also by Alcantara and Coria to Ciudad Rodrigo and Salamanca.
That officer, crossing a swamp supposed to be impassable, attacked the rebel stockade at Kabagambi, and carried it with great gallantry.
It lies between Siam and the Bay of Bengal, enclosed by mountains on three sides, viz., the main chain of the Bilauktaung on the east, rising in places to 5000 feet, which, with its densely wooded spurs, forms an almost impassable barrier, between British and Siamese territory; the Nwahlabo in the centre, which takes its name from its loftiest peak (5000 ft.); and a third.
Although deep river channels are common, falls or impassable rapids are rare west of the Alleghany Plateau, and the state has an extensive mileage of navigable waters.
A fringe of ice generally lines the greater part of the Danish coasts on the eastern side for some time during the winter, and both the Sound and the Great Belt are at times impassable on account of ice.
Farther, but at this point its bed is obstructed by impassable falls and rapids, which are of such a character that nothing can even be brought down them.
The marshes which line the Save below Sissek are often impassable except at Brod and Mitrovica, and the river is constantly scooping out fresh channels in the soft soil, only to abandon each in turn.
M., but of this 51.2% consists of arid and almost impassable deserts, namely the Takla-makan (q.v.), the desert of Lop, the Ghashiun Gobi, and the desert of Kum-tagh, which are described under Gobi.
No broad impassable line here divided the aristocracy from the people.
Except where crossed by these routes the Elburz forms an almost impassable barrier to the south.
The subsidence within is less rapid than the rise; and the streams are impassable for about seven months in each year.
Washington's retreat through New Jersey; the manner in which he turned and struck his pursuers at Trenton and Princeton, and then established himself at Morristown, so as to make the way to Philadelphia impassable; the vigour with which he handled his army at the Brandywine and Germantown; the persistence with which he held the strategic position of Valley Forge through the dreadful winter of 1777-1778, in spite of the misery of his men, the clamours of the people and the impotence and meddling of the fugitive Congress - all went to show that the fibre of his public character had been hardened to its permanent quality.
For the rest there is a network of tracks, all practically impassable by wheeled vehicles, extending over the country and connecting the towns and villages one with another.
The crowning point of his railway policy was the regulation of the Danube at the hitherto impassable Iron-Gates Rapids by the construction of canals, which opened up the eastern trade to Hungary and was an event of international importance.
They wished to possess the earth and enjoy it by means of secular education and culture, and an impassable gulf yawned between their views of religion and morality and those of the Church.
There are no glaciers near its sources, although they must have existed there in geologically recent times, but masses of melting snow annually give rise to floods, which rush through the midst of the valley in a turbid red stream, frequently rendering the river impassable and cutting off the crazy brick bridges at Herat and Tirpul.
Built in a low and swampy country and approached by deep and almost impassable roads, Barfurush would not seem at all favourably situated for the seat of an extensive inland trade; it is, however,.