Structurally, the folds of this region are of ancient date; but the area is crossed by a series of depressions formed by faults, and the intervening strips, which have not been depressed to the same extent, now stand up as mountain ranges.
In this matter, differentiation has proceeded very differently in animals and plants respectively, no nerves or sense organs being structurally recognizable.
On the other hand, it is rich in Cornpositae, especially Solidago and A ster, Polemoniaceae, Asciepiadaceae, Hydrophyllaceae and Cyperaceae, and it has the endemic Sarracenia, type of a family structurally allied to poppies, of which of the remaining genera Darlingtonia is Californian, and Heliamphora Venezuelan.
In the Polychaeta, which are to be regarded as structurally simpler forms than the two groups just referred to, there is but little subdivision of the coelom of the segments, indeed a tendency in the reverse direction, owing to the suppression of septa.
It has been men, tioned that in the Nereids a sexual form occurs which differs structurally from the asexual worms, and was originally placed in a separate genus, Heteronereis; hence the name "Heteronereid" for the sexual worm.
C. Miall remarks, is structurally little other " than the fly enclosed in a temporary skin."
The Royal Scottish Museum, structurally united to the university, contains collections illustrative of industry, art, science and natural history; and Minto House college and Heriot-Watt college are practically adjuncts of the university.
Consequent disuse, and the transmission (as Lamarck would have supposed) of a more and more weakened and structurally impaired eye to the offspring in successive generations, until the eye finally disappeared.
Still, it must be borne in mind that this alleged autonomy of action is said to be founded upon an erroneous supposition, on the supposition that each cell is structurally, and it may be said functionally, separated from those in its neighbourhood.
They differ structurally from the normal form in being capable of self-fertilization only, and in the shape and details of their spermatozoa.
Structurally Japan is divided into two regions by a depression (the Fossa Magna of Naumann) which stretches across the island of Hondo from Shimoda to Nagano.
Structurally it would seem to have some relation to the siskins (Chrysomitris), though the members of the two groups have very different habits, and perhaps its nearest kinship lies with the hawfinches (Coccothraustes).
The house, which had been left to the grand-duke for the nation, was then found to be so structurally rotten that the interior had to be largely reconstructed.
From comparative anatomy alone it is possible to arrange a series of living forms which, although structurally a convincing array because placed in a graded series, may be, nevertheless, in an order inverse to that of the actual historical succession.
Itis determined The Great structurally by a belt of topographically weak limestones VaJie and shales (or slates) next inland from the crystalline ~ uplands; hence, whatever the direction of the rivers which drain the belt, it has been worn down by Tertiary erosion to a continuous lowland from the Gulf of St Lawrence to central Alabama.
An inland extension from the coastal plain in north-central Texas leads to a large cuesta known as Grand Prairie (not structurally included in the coastal plain), upheld at altitudes of 1200 or 1300 ft.
Structurally the Neuroptera are distinguished by elongate feelers, a large, free prothorax, a labium with the inner lobes of the second maxillae fused together to form a median ligula, membranous, net-veined wings without hairy covering, those of the two pairs being usually alike, the absence of abdominal cerci, and the presence of six or eight Malpighian tubes.
Geologically and structurally Cyrenaica is a mass of Miocene limestone tilted up steeply from the Mediterranean and falling inland by a gentle descent to sea-level again at the line of depression, which runs from the gulf of Sidra through Aujila to Siwa.
But though Hebrew possesses a very old literature, it is not, as we know it, structurally as early as, e.g.
Although, like protective resemblance, quite independent of affinity between the organisms concerned in the likeness, mimicry occurs most commonly between animals structurally similar, and therefore related, to one another, the relationship may be close or remote.
Cross-fertilization must of necessity occur when the flowers are structurally unisexual, as in the hazel, in which the male and female flowers are monoecious, or separate on the same plant, and in the willow, in which they are dioecious, or on different plants.
Structurally naphthalene may be represented as.
According to Hantzsch the isomeric diazo hydroxides are structurally identical, and the differences in behaviour are due to stereo-chemica l relations, the isomerism being comparable with that of the oximes.
Each neuron or nerve cell is a morphologically distinct and discrete unit connected functionally but not structurally with its neighbours, and leading its own life independently of the destiny of its neighbours.
Structurally they are either a plate of cells, as in Porphyra, or filaments, as in Bangia.
By many modern writers the American prongbuck, pronghorn or " antelope," alone forming the genus Antilocapra, is regarded as representing merely a sub-family of the Bovidae, to which latter group the animal is structurally akin.
In 1872 appeared Love is Enough, structurally the most elaborate of his poems for its combination of the epic and dramatic spirits; and in the autumn he began to translate the shorter Icelandic sagas, to which his enthusiasm had been directed by two inspiring journeys to Iceland..
In A pis the workers differ structurally from the queen, who neither builds cells, gathers food, nor tends brood, and is therefore without the special organs adapted FIG.
Apart from the important advance shown in the anatomy of the stem, Lyginodendron agrees structurally with Heterangium.
Substances that by reason of the structure or arrangement of their molecules rotate the plane of polarization are said to be structurally active, and the rotation produced by unit length is called their rotary power.
There is, however, a marked difference between this magnetic rotation and that of a structurally active medium, for in the latter it is always right-handed or always left-handed with respect to the direction of the ray, while in the former the sense of rotation is determined by the direction of magnetization and therefore remains the same though the ray be reversed.
Structurally, the four main chains of Colombia differ considerably from one another in geological constitution.
Structurally, its Latin characteristics have been well preserved; but its vocabulary has undergone great changes, becoming so far Slavonized that the ratio of words of Slavonic origin to words of Latin origin is approximately as three to two; large numbers of loan-words have also been added from Turkish, Greek, Magyar and other sources.
Structurally we have: NH, < >-NH NH- < > --> NH 2 < - j- < NH2 and NHz< > - < > Hydrazohenzene.
This physiologist in 1867 2 showed that all natural wings, whether of the insect, bird or bat, are screws structurally, and that they act as screws when the y are made to vibrate, from the fact that they twist in opposite directions during the down and up strokes.
They are divided by the valley of the Arkansas river into two regions, which are also structurally different.