There are three variations of the simple fold dependent upon the position of the limbs, (I) the limbs may tend to diverge as they recede from the crest (fig.
And north to south loo m., consists of rolling grass covered downs, absolutely treeless, save where, as at Johannesburg, plantations have been made by man, the crest of the rolls being known as builts and the hollows as laagtes or vleys.
The cock has a fine yellow bill and a head bearing a rounded crest of filamentous feathers; lanceolate scapulars overhang the wings, and from the rump spring the long flowing plumes which are so characteristic of the species, and were so highly prized by the natives before the Spanish conquest that no one was allowed to kill the bird when taken, but only to divest it of its feathers, which were to be worn by the chiefs alone.
It is no less remarkable for its bright carmine attire, and an elongated crest of the same colour, than for its fine song.
Within the Upper Greensand an equally narrow ring of Gault is exposed, its stiff clay forming level plains of grazing pasture, without villages, and with few farmhouses even; and from beneath it the successivOeds of the Lower Greensand rise towards the centre, forming a wider belt, and reaching a considerable height before breaking off in a fine escarpment, the crest of which is in several points higher than the outer ring of Chalk.
The nostrils open obliquely at some distance from the end of the snout, and the head carries a crest of long hair.
A frieze of lions devouring ibexes and deer, and incised with great artistic skill, runs round the neck, while the eagle crest of Lagash adorns the globular part.
For the most part the main crest constitutes the Franco-Spanish frontier; the principal exception to this rule is formed by the valley of Aran, which belongs orographically to France but politically to Spain.
Near the crest of anticlines is commonly an enriched portion of the ground in mineralized districts; and, in the case of water supply, the tilt of the strata determines the direction of the underground flowage.
On a ledge below the crest of the Palisades is the famous duelling ground, where New York citizens and others once settled their quarrels.