And 21° W.), while the centre of the so-called water-hemisphere lies to the S.E.
Cromwell wisely inclined towards France, for Spain was then a greater menace than France alike to the Protestant cause and to the growth of British trade in the western hemisphere; but as no concessions could be gained from either France or Spain, the year 1654 closed without a treaty being made with either.
Juglandaceae), natives of the temperate regions of the northern hemisphere, extending into Mexico, the West Indies and tropical South America.
Of Venus, but he was also expressly commissioned coox to ascertain " whether the unexplored part of the southern hemisphere be only an immense mass of water, or contain another continent."
6 W., would behold at one view the greatest possible quantity of land, while the opposite hemisphere would contain the greatest quantity of water.
Once widely distributed in the Jurassic penod throughout the world, they are now dying out: the former is represented by the solitary maiden-hair tree of China and Japan; the latter by some ten species confined to the southern hemisphere, once perhaps their original home.
They point to cooler conditions in the northern hemisphere: palms and tropical types diminish; deciduous trees increase.
The evidence which has thus been briefly summarized, points unmistakably to the conclusion that existing vegetation originated in the northern hemisphere and under climatic conditions corresponding to what would now be termed sub-tropical.
Fagus, starting from the northern hemisphere, has more than held its own in Europe and Asia, but has all but died out in North America, finding conditions favorable for a fresh start in Australasia.
In the form known as Ferrell's Law this runs: " If a body moves in any direction on the earth's surface, there is a deflecting force which arises from the earth's rotation which tends to deflect it to the right in the northern hemisphere but to the left in the southern hemisphere."
A well-marked trochosphere is formed by the development of an equatorial ciliated band; and subsequently, by the disproportionate growth of the lower hemisphere, the trochosphere becomes a veliger.
Instance, Muller places in his third "tribe" the group which he called Ampelidae, meaning thereby the peculiar forms of South America that are now considered to be more properly named Cotingidae, and herein he was clearly right, while Nitzsch, who (misled by their supposed affinity to the genus A mpelis - peculiar to the Northern Hemisphere, and a purely Passerine form) had kept them among hisPasserinae, was as clearly wrong.
Both of these families are distributed over the whole of the northern hemisphere, but whereas the Cervidae are absent from Africa south of the Sahara and well represented in South America, the Bovidae are unknown in the latter area, but are extraordinarily abundant in Africa.
Amongst Cycads, Zamia is confined to the New World, and amongst Conifers, Araucaria, limited to the southern hemisphere, has scarcely less antiquity; Pinus reaches as far south as Cuba and Nicaragua.
The typical genus Lilium and Fritillaria are widely distributed in the temperate regions of the northern hemisphere; F.
Gray with regard to the numbers of genera and species respectively represented in the forest trees of four regions of the northern hemisphere, the following is the case:
Hemisphere the 45th parallel may indicate their limit.
Martens are limited to the northern hemisphere, ranging throughout the greater part of the northern temperate regions of both Old and New Worlds, and southwards in America to 35° N.
The centre of the so-called land-hemisphere lies near the mouth of the Loire (471° N.
The monotypic Pringlea antiscorbutica, the Kerguelen Island cabbage, has no near ally in the southern hemisphere, but is closely related to the northern Cochlearia.
The violets comprise a large botanical genus (Viola) - in which more than 200 species have been described - found principally in temperate or mountain regions of the northern hemisphere; they also occur in mountainous districts of South America and South and Tropical Africa, while a few are found in Australasia.
Though now on the way to extinction, Cycadeae are still widely represented in the southern hemisphere by genera which, however, have no counterpart in the Mesozoic era.
Beyond the arctic circle some 200, or more than a quarter, are confined to the mountains of the northern hemisphere and of ~still more southern regions.
And 160° E., as is usual in atlases, the eastern hemisphere, to which the Old World belongs, has 62% of its surface made up of water, while the western hemisphere, including America, has 81%.
The west-wind drifts on the poleward side carry back part of the water southward to reunite with the equatorial current, and thus there is set up an anticyclonic circulation of water between io and 40° in each hemisphere, the movement of the water corresponding very closely with that of the wind.
'AQUILA, in astronomy, the " Eagle," sometimes named the " Vulture," a constellation of the northern hemisphere, mentioned by Eudoxus (4th cent.
It has a world-wide distribution, but finds its chief development in the temperate and frigid zones, especially of the northern hemisphere, and as Alpine plants.
When this is the case the gathering is carried to a block or half-open mould in which it is rolled and blown until it acquires, roughly, the shape of a hemisphere, the flat side being towards the pipe and the convexity away from it; the diameter of this hemisphere is so regulated as to be approximately that of the cylinder which is next to be formed of the viscous mass.
AURIGA (the "charioteer" or "waggoner"), in astronomy, a constellation of the northern hemisphere, found in the catalogues of Eudoxus (4th century B.e.) and Aratus (3rd century B.C.).
It is also a constellation of the southern hemisphere, mentioned by Eudoxus (4th.
This main scheme is complicated in various ways: (r) by the rotation of the earth, which continually deflects currents of water or air to the right in the northern or to the left in the southern hemisphere; (2) by the conformation of the land masses (as in the case of the equatorial stream which is banked up in the Gulf of Mexico and flows out through the Straits of Florida); (3) by the varying depth of the ocean, for currents tend to flow more readily through deep than in shallow waters (as in the case of the main Atlantic drift, which flows most strongly through the deep channel between Shetland and the Faroe Is.); and (4) by the driving force of the winds acting on the surface of the sea (thus the drift of water from the equator is not N.E., as one might expect, but from E.