Izerbacea and arctic species generally, to 1 oo ft., and occurring most abundantly in cold or temperate climates in both hemispheres, and generally in moist situations; a few species occur in the tropical and sub-tropical portions of the three great continents.
I had to seal the hemispheres.
the largest genus of the order, the sedges, is widely distributed in the temperate, alpine and arctic regions of both hemispheres, and is represented by 60 species in Britain.
The cerebral hemispheres in existing Ungulates are well convoluted.
Taking two hollow hemispheres of copper, the edges of which fitted nicely together, he exhausted the air from between them by means of his pump, and it is recorded that thirty horses, fifteen back to back, were unable to pull them asunder until the air was readmitted.
The hemispheres are rather elongated and subcylindrical, the olfactory lobes are large and project freely in front of the' hemispheres, and the greater part of the cerebellum is uncovered.
What may be called typical, that is to say arboreal, squirrels are found throughout the greater part of the tropical and temperate regions of both hemispheres, although they are absent both from Madagascar and Australasia.
These isothermal lines will be found to vary frommonth to month over the two hemispheres, or over local areas, during summer and winter, and their position is modified by continental or oceanic conditions.
Sporobolus, a large genus in the warmer parts of both hemispheres, but chiefly America, derives its name from the fact that the seed is ultimately expelled from the fruit.
Starting from the fact that if an electrified globe, placed within two hemispheres which fit over it without touching, is brought in contact with these hemispheres, it gives up the whole of its charge to them - in other words, that the charge on an electrified body is wholly on the surface - he was able to deduce by most ingenious reasoning the law that electric force varies inversely as the square of the distance.
the connexion between the corpora striata, or chief remaining part of the hemispheres.
There is very little grey matter in the cortex of the hemispheres, the surface of which is devoid of convolutions, mostly quite smooth; in others, for instance pigeons, fowls and birds of prey, a very slight furrow might be compared with the Sylvian fissure.
The right and left lobes themselves are rent asunder (so to speak), so that they are freely visible from above, filling the corners formed by the hemispheres and the cerebellum.
The genus Gossypium includes herbs and shrubs, which have been cultivated from time immemorial, and are now found widely distributed throughout the tropical and subtropical regions of both hemispheres.
Bitumen is, in its various forms, one of the most widel y -distributed of substances, occurring in strata of every geological age, from the lowest Archean rocks to those now in process of deposition, and in greater or less quantity throughout both hemispheres, from Spitzbergen to New Zealand, and from California to Japan.
The shell thus formed is then cut along the line of the intended equator into two hemispheres, they are then again glued together and made to revolve round an axis the ends of which passed through the poles and entered a metal meridian circle.
Throughout the northern regions of both hemispheres there are several breeds of semi-domesticated dogs which are wolf-like, with erect ears and long woolly hair.
6 a Oligocene of both hemispheres appears Protapirus, which ranges well into the Miocene, and is essentially a tapir, having lost the third lobe of the last lower molar, and being in process of acquiring molar-like upper premolars, although none of these teeth have two complete inner columns.
- The Pedipalpi are confined to the tropics and warmer temperate regions of both hemispheres.
Members of the group have existed in both east and west hemispheres since the beginning of the Miocene period; but in America they all became extinct before the end of the Pliocene period, and in the Old World their distribution has become greatly restricted.
Cavendish proved it by enclosing a metal sphere in two hemispheres of thin metal held on insulating supports.
If the sphere is charged and then the jacketing hemispheres fitted on it and removed, the sphere is found to be perfectly discharged.
About fifteen species are known from the coasts and rivers of the temperate regions of the northern and southern hemispheres.
The polar or white bear (Ursus maritimus), common to the Arctic regions of both hemispheres, is distinguished from the other species by having the soles of the feet covered with close-set hairs, - in adaptation to the wants of the creature, the bear being thereby enabled to walk securely on slippery ice.
For the genus Elotherium, of the Lower Miocene and Upper Oligocene of both hemispheres, which is often placed next the Suidae, see ARTIODACTYLA.
And the smooth hemispheres of the brain do not extend backwards so as to cover any part of the cerebellum.
The genus which is common to the northern parts of both hemispheres is distinguished by the large cheek-pouches and by the absence or rudimentary condition of the claw of the first hind-toe, resembles Tamias in the slender form of the body, but displays great variation in the length of the tail, which may be a mere stump, or comparatively long.
The genus is common to the northern half of both hemispheres, and its members burrow and hibernate.
These efforts in the two hemispheres are based on the idea that international differences can be adjusted without war, where the parties are honestly aggrieved.
at the imperial diet which assembled at Regensburg in 1654, by the experiment of the "Magdeburg hemispheres."
On some of these occasions aurora was brilliant in both the northern and southern hemispheres, whilst magnetic disturbances were experienced the whole world over.
This condition is more than usually readily induced when the cerebral hemispheres have been removed.
Suspension of cerebral influence exists even more markedly, of course, when the cerebral hemispheres have been ablated.
Reindeer, or caribou, constitute the genus Rangifer, and are large clumsily built deer, inhabiting the sub-Arctic and Arctic regions of both hemispheres.
Having regard to the special precautions taken to eliminate systematic error, and to the fact that the stars used were distributed nearly equally over both hemispheres, it is fair to conclude that this is the most accurate determination yet made.
That the sun is nearly midway between the two boundary planes can be tested by comparing the star-densities of the northern and southern galactic hemispheres.
The species are mostly natives 'of western tropical South America; others are found in various tropical and sub-tropical districts of both hemispheres.
Northern part of both hemispheres.
Northern portion of both hemispheres.
It has now been introduced by man into almost all parts of the world where agricultural operations are carried on, but flourishes especially in the temperate regions of both hemispheres.
With the primitive five-toed Amblypoda, as represented by the coryphodon, we again reach a northern group, common to the two hemispheres; but there is not improbably some connexion between this group and the much more specialized Barypoda, as represented by Arsinoitherium, of Africa.
The Ancylopoda, again, typified by Chalicotherium, and characterized by the claw-like character of the digits, are probably another northern group, common to the eastern and western hemispheres.
Vallisneria (eel-grass) contains two species, one native of tropical Asia, the other inhabiting the warmer parts of both hemispheres and reaching as far north as south FIG.
Representatives of the Ginkgoales constitute characteristic members of the later Triassic floras, and these, with other types, carry us on without any break in continuity to the Rhaetic floras of Scania, Germany, Asia, Chile, Tonkin and Honduras (Map A, VIII.), and to the Jurassic and Wealden floras of many regions in both the north and south hemispheres.
case alternation and length effects in the two cerebral hemispheres: a study of English and Hebrew.
cerebral hemispheres differ in their ability to group visual information.
Answer: left side What structure is responsible for the exchange of information between the right and left cerebral hemispheres?
Generalized epileptic seizures involve both cerebral hemispheres from the onset of the seizure, and consequently any motor manifestations are bilateral.
Pons - the part of the brainstem that joins the hemispheres of the cerebellum and connects the cerebrum with the cerebellum.
The two hemispheres communicate via dense bundles of nerve fibers called the corpus callosum.
hemispheres of the brain then act in unison to " hear " a third signal - the difference between the two tones.
Corpus callosum: A thick band of nerve fibers that connects the two cerebral hemispheres of the brain.
High incidence of cortical atrophy of the cerebral and cerebellar hemispheres in Cushing's disease.
lobe of the cerebral hemispheres.
As additional features of the subclass may be mentioned the absence of a corpus callosum connecting the right and left hemispheres of the brain,' and of a fossa in the septum between the two auricles of the heart.
Several futile attempts have been made to draw conclusions as to the intelligence of various birds, from comparison of the weight of the whole brain with that of the body, or the weight of the hemispheres with that of other parts of the central nervous system.
If the globe is divided into hemispheres by the meridians of 20Ã‚° W.
The genus is common to the northern half of both hemispheres, and its members, like those of the two preceding groups, burrow and hibernate (see Marmot).
It includes Sciuropterus, represented by small species from the northern parts of both hemispheres; Pteromys, comprising large flying-squirrels, ranging from India and the Malay countries to Japan, characterized by the long cylindrical tail and large inter-femoral membrane; and Eupetaurus, represented by one very large dark grey, long-tailed and longhaired species from Astor and Gilgit, which differs from all other members of the family by its tall-crowned cheek-teeth (see Flying Squirrel).
The so-called prairie-dogs, which are smaller and more slender North American rodents with small cheek-pouches, form a separate genus, Cynosnys; while the term pouched-marmots denotes the various species of souslik, Spermophilus (or Citillus), which are common to both hemispheres, and distinguished by the presence of large cheek-pouches (see RODENTIA).
In general structure they all closely resemble human beings, as in the absence of tails; in their semi-erect position (resting on finger-tips or knuckles); in the shape of vertebral column, sternum and pelvis; in the adaptation of the arms for turning the palm uppermost at will; in the possession of a long vermiform appendix to the short caecum of the intestine; in the size of the cerebral hemispheres and the complexity of their convolutions.
Sir David Brewster found that Wollaston's form worked best when the two lenses were hemispheres and the central space was filled up with a transparent cement having the same refractive index as the glass; he therefore used a sphere and provided it with a groove at the equator (see fig.
When poliovirus invades the brainstem (the stalk of brain which connects the two cerebral hemispheres with the spinal cord, called bulbar polio), a person may begin to have trouble breathing and swallowing.
Brainstem-The stalk of the brain which connects the two cerebral hemispheres with the spinal cord.
Basal ganglia-Brain structure at the base of the cerebral hemispheres involved in controlling movement.
Commonly, the fore-brain fails to divide into lobes or hemispheres (holoprosencephaly), and the entire head is unusually small (microcephaly).
Soon after closure of the neural tube, the brain divides into two halves, or hemispheres.
The cerebellum is located at the base of the skull and is divided into two parts or hemispheres with a third section that connects the hemispheres.
The cerebrum is the largest part of the brain and is divided into two halves or hemispheres as well.
Between 70 and 90 percent of humans have language specialization in their left hemispheres.
The remainder may have right-hemisphere specialization or no real distinction between the two hemispheres in language specialization.
A primary generalized seizure occurs when electrical discharges begin in both halves (hemispheres) of the brain at the same time.
Tango history is a rich and varied path through two hemispheres and hundreds of years.
Even so, both hemispheres have come to many of the same conclusions about the heavens and how they affect our world.
The two crescents represent the two hemispheres of the brain with the line or cord (linking the two) representing the "third eye".
In autistic people, the right and left hemispheres of the brain may have trouble working together.
Hemispheres is a home furnishings store.
In the New World, as already explained, the path of communication between the northerri and southern hemispheres has always been more or less open, and the temperate flora of southern America does not exhibit the isolation characteristic of the southern region of the Old World.
If the globe is divided into hemispheres by the meridians of 20° W.
A great circle can be drawn upon a terrestrial globe in such a way as to divide it into two hemispheres, one of which contains the greatest amount of land and the other the greatest amount of sea of any possible hemispheres.
The forebrain forms the bulk of the whole brain, but the large size of the hemispheres is due to the greater development of the basal and lateral portions (pedunculi cerebri and corpora striata), while the pallium (the portion external to the lateral ventricles) is thin, and restricted to the median side of each hemisphere.
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